The price of Chameleon Colossus dropped over time thanks to reprints in Archenemy, From the Vault: Twenty, and Commander 2015. But, thanks toincreased play in Modern sideboards and play in Dinosaur Tribal decks with Gishath, Sun's Avatar, all printings of Chameleon Colossus have been on a steady rise in price.
Chameleon Colossus in Elves
For years, Chameleon Colossus saw a lot of play in Elf decks, thanks to the fact that he's a Changeling. The protection from black is also very useful, as a good deal of popular removal cards are black. It also means decks with primarily black creatures can't block him. Since the Colossus can double its own power as many times as you can pay 2GG, he can deal a ton of damage, too. So, he made a great versatile companion to Elves decks since he counted as an Elf himself.
Chameleon Colossus in Modern Sideboards
While Chameleon Colossus is a strong, efficient creature, four mana creatures that don't have an immediate impact on the board don't see much play in Modern. But, fortunately for Chameleon Colossus, he has that protection against black going for him. As it turns out, most of the best removal spells in Modern are still predominantly black. So, has he found any home?
Red/Green Scapeshift decks began to adopt a single copy in the sideboard, as did Gruul Land Destruction and Tooth and Nail combo decks. These seem like somewhat odd places for him to go. But, having 4 toughness means he's out of Lightning Bolt range, plus all of the other best removal - Dismember, Fatal Push, & Terminate - can't touch it. All of these decks also depend on keeping a threat on the board, which Chameleon Colossus certainly is. Four mana to double his power and toughness is very doable in these decks.
Plus, Protection from Black means that Chameleon Colossus can block major threat creatures like Death's Shadow all day. For what it's worth, the Colossus can also block Bloodghast, Gurmag Angler, and Tasigur, the Golden Fang, not to mention any other Black creature that sees play in Modern. So, just to have a fairly difficult to remove wall against big Black creatures is worth playing Chameleon Colossus in the sideboard of a number of Modern decks.
Chameleon Colossus in EDH
According to EDHREC, Chameleon Colossus is played in over 3000 EDH decks. Being a Changeling, it's not surprising that he's found his way into a number of tribal decks. The protection from Black also means that he's somewhat tricky to remove and also can block big Black creatures from getting through on the ground.
The EDH deck that plays Chameleon Colossus the most is Reaper King. This is somewhat unsurprising, since as a Changeling, he automatically counts as a Scarecrow, which Reaper King boosts by +1/+1. Reaper King also has another ability that whenever another Scarecrow enters the battlefield under your control, you destroy a target permanent. So, not only does the Colossus become a 5/5 for 4 mana, but he takes out a permanent when he enters. That makes him and any other Changeling an automatic play in the Reaper King deck.
Kaseto, Orochi Archmage has also given Chameleon Colossus a home. Not only is the Colossus perfect for the Snake Tribal deck. but Kaseto can make creatures unblockable. If that creature is a Snake, Kaseto also gives it +2/+2. With the Colossus's ability to double his power and toughness, he can deal a whole ton of damage that can't be blocked. Ouch.
Arahbo, Roar of the World, the Cat Tribal Commander, has also taken full advantage of Chameleon Colossus. Not only is the Colossus a very big Cat, but Arahbo can give the Colossus +3/+3 at the beginning of combat, plus he can give him trample AND double his power and toughness. On top of the Colossus being able to double his own power already, you get a very massive trampler. Major ouch.
Other Commanders who like to have Chameleon Colossus in the deck include Ezuri, Claw of Progress, Atogatog, Seton, Krosan Protector, Xenagos, God of Revels, Ishkanah, Grafwidow, Gishath, Sun's Avatar, and more.
Is Chameleon Colossus Worth the Price?
Really, any printing of this card is worth having in your Magic card collection. If you’d like a cheap foil copy, the From the Vault: Twenty version is worth considering. Anyone who plays Green in Commander or casual play should pick up at least a copy of Chameleon Colossus. Also, anyone who wants to round out their binder with long-term investments should consider stocking up on this card. It fits into many tribal strategies and will always find homes in Kitchen Table Magic decks somewhere.