The Swarming Instinct Intro Pack for Battle for Zendikar is a Blue/Green ramp deck that demonstrates the swarming instincts of the Eldrazi tribe. It features Drowner of Hope as the cover rare, as well as the casual favorite, Desolation Twin as the second rare. It also has two copies of a very useful uncommon, Hedron Archive.
The primary objective of this deck is to play creatures that come into play along with Eldrazi Scion tokens. These are tokens that you can sacrifice to provide you with colorless mana, allowing you to cast your bigger spells like the Twin, Bane of Bala Ged, and Breaker of Armies at a much earlier point in the game than you ordinarily would be able to. There are also plenty of cards that synergize excellently with the pure colorless nature of your creatures thanks to their Devoid mechanics.
Does the Swarming Instinct take over the game with this deck as constructed? Watch the video review and find out!
(Note: this video is from October 2015. Since then, Drowner of Hope has been in a Pro Tour winning Modern Blue/Red Eldrazi deck. Although a bit slow in Standard, with Eye of Ugin and Eldrazi Temple to help cast Eldrazi spells, the Drowner is a lot easier to cast.)