Taking extra turns in the Magic the Gathering is a pretty awesome thing to do. One of the most powerful cards in Magic the Gathering is Time Walk, which lets you take an extra turn for only two mana (one and a Blue - 1U).  It's banned in every format except Vintage for a reason.

Still, there have been many other "Time Walk" variety cards printed over the years, including the ever-popular Temporal Mastery (5UU) from Avacyn Restored. Beacon of Tomorrows (6UU) from Fifth Dawn even was reusable - shuffling itself back into the deck after use. There's also Time Stretch from Tenth Edition which let you take two extra turns for 10 mana (8UU - 8 and 2 Blue).

Temporal Trespass may appear to be a bit pricey at 8UUU (8 colorless, 3 Blue), which is a total investment of eleven mana. But most extra turn cards that have been printed have been costed similarly. The major advantage of this card is the fact that it includes the Delve mechanic. For each card you exile from your graveyard, you can reduce the cost of casting Temporal Trespass by one colorless mana.

That's right: If you have 8 cards in your graveyard, you can take an extra turn for only 3 Blue Mana (UUU). This is an extremely attainable thing to do, especially in Mono-Blue or predominantly Blue decks that use a lot of instants and sorceries as part of their control schemes. This card becomes extremely valuable late-game, when an extra turn can simply finish the game.

Exiling itself after use does prevent Temporal Trespass from being too horribly broken, but this doesn't mean that its effect can't be copied while it's still on the stack. Duplication effects can still take good advantage of this card. Still, it's just a bit too pricey for most Constructed formats, even if it can often be 5 or fewer mana to cast. 

Now, Commander probably didn't need another extra turn giving card. But since it exists, Commander deck builders are happy to try and use Temporal Trespass
to its maximum potential. Narset, Enlightened Master is happy to cheat it into play for free, and Jhoira of the Ghitu is happy to suspend it for just 2 mana. Many Commander decks have found a home for this card, and it's really the only format in which it sees much play.

The Wizards design team did a good job with this card, making sure that it wasn't too broken. Treasure Cruise and Dig Through Time were delve cards that proved to be a bit too powerful for most formats. Compared  to those two, Temporal Trespass is going to feel underwhelming, but as Delve cards go, this is a perfectly useful and playable one, at least in Commander.

Archfiend of Depravity is an interesting creature card from Fate Reforged. He would later have a promotional printing as well as a reprint in  Archenemy: Nicol Bolas. Besides being a decent sideboard card during his time in Standard, the Demon has become a favorite of casual and Commander players. He has decent stats as a 5/4 flyer for 3BB. But it's his ability that makes him so good.

During each of your opponent's end steps, that player has to choose two creatures he or she controls, then sacrifice the rest. Against aggressive strategies, this is absolutely devastating. While not every deck focuses on having lots of creatures out at one time, the Archfiend can turn up whenever an opponent is trying to win by just turning a bunch of creatures sideways.

There are quite a few decks that rely on creating lots of tokens or casting tons small creatures in order to simply overwhelm opponents. The Archfiend can absolutely punish these strategies. With Fate Reforged introducing the Manifest mechanic and Elves becoming more of a force due to cards like Collected Company and Shaman of the Pack, the Archfiend would drop in from time to time out of the sideboard  to say hello.

Why didn't he see more play in Standard, though? Having a 5/4 body is cool, but that means it died to things like Stoke the Flames and Languish in the Standard of the day. In Modern, there's Path to Exile, Dismember, and Fatal Push. Still, the Archfiend only has to survive one turn with your opponent having to sacrifice a bunch of creatures to it for it to be worth casting. Best of all, the Archfiend never hurts you at all.

In Commander, the Archfiend of Depravity is a killer. Not only are Demons a popular tribe, but Black decks love things to die. The Archfiend makes even more things die, as his effect is extremely powerful in a multi-player setting.  It's not surprising that the Archfiend is at home in many Commander decks.

Archfiend of Depravity may never be a main deck play outside of casual "kitchen table" Magic and Commander. But, if you're in a metagame where aggressive creature-based strategies are taking over,  you may see him drop in. Decks that depend on their board states being filled by armies are sad if the Archfiend of Depravity says hello.

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Need Archfiend of Depravity for your deck?

Torrent Elemental once saw play in the competitive Sidisi Whip deck in Standard. Once the primary card of that build, Whip of Erebos, left Standard, though, it basically stop seeing play. That was in spite of a Delve-based Sultai deck remaining in the format. One of only a couple creature cards that can be played from exile, it seemed to be a good choice to see some future play. But, did that actually happen?

The Elemental is a 3/5 flyer for 4U. Whenever it attacks, you tap all creatures the defending player controls. That's a pretty sweet ability, actually, helping you to swing past big problem creatures. Since Sultai decks played huge creatures like Tasigur, the Golden Fang, Gurmag Angler, and Sidisi, Undead Vizier already, that tap ability can be a game-ender.

Then, if you happen to need to Delve it away, you can pay 3BB, 3GG, or 3BG to return it to play from exile tapped. It does have to be played as a sorcery, which is kind of too bad. Having to be played from exile at sorcery speed is probably why this hasn't seen more play in that Whip deck. It's basically been relegated to the sideboard in a lot of build to deal with Aggro strategies, but some players have mainboarded it with some success.

The big thing about Torrent Elemental is that it could survive Languish, the powerful-4/-4 board-wipe in Magic Origins that was a major removal spell in Standard for quite some time. It's really not a bad creature at all, and it seems playable. But, without Whip to bring it back from the graveyard, it lost a lot of its Standard competitive usefulness.

For awhile, this was a bulk mythic rare that vendors had high hopes for, and you could get them as throw-ins in trades to get some vendor store credit quite easily.  Unfortunately, a new deck never emerged for the Torrent Elemental. But, it's still a good card that may one day find a new home.

by ElspethFTW, Old School Duelist

Abzan Beastmaster is an interesting creature card from Fate Reforged that helps you fuel your hand. The Beastmaster allows you to draw an extra card at the beginning of your turn if you control the creature with the greatest toughness or tied for the greatest toughness.

Wizards of the Coast seems to love this card a lot because they decided to commission alternate artwork for a Friday Night Magic promo card, which will be handed out as part of the prize packages for May 2015 FNM events. So far it hasn't seen much play outside of sideboards, but it's a card with some potential.

With high-toughness creatures such as Siege Rhino (5) and Wingmate Roc (4) seeing considerable play, it's not hard to see the Beastmaster consistently drawing you a card or two in the course of a game.. It does have a rather fragile body at 2/1, and currently creatures like Courser of Kruphix take up the 3-mana slot in many Standard decks. But at the September 2015 rotation, there will be room for this card to see play.

In Commander, there are plenty of options in Green for card draw.. Garruk's Packleader, which lets you draw a card anytime you play a creature with power 4 or greater, is a bit more consistent at the creature level. If you can pump out a ton of creatures quickly, though, the Beastmaster should be able to draw you at least a couple of cards, but there are better things to put out in Commander on turn 3. Plus, you have Harmonize, which draws you 3 cards for 4 mana (2GG). Beastmaster is a bit slow for that format.

While Abzan Beastmaster isn't the strongest Friday Night Magic promo ever, it's one that should be played a bit at some point, so it's a good one to have around for when it does end up in some top lists.