The last deck, Eldrazi Incursion, features all six colours of Mana (the normal five, plus colourless Mana) and does what Zendikars most hated scourge does best: start small before ushering in massive, obliterating threats
Ancient Brass Dragon This costs seven, gives you an on curve 7/6 with flying, and then also has the "combat damage trigger toss a d20 for results" ability
Instant Color tag templates(None) Vampiric Tutor Search your library for a card, then shuffle and put that card on top
Whenever Radagast the Brown or another nontoken creature enters the battlefield under your control, look at the top X cards of your library, where X is that creature's mana value
Torbeck, Ph.D
I expect that well never get an instant for 1B that just destroys any creature, but the more options that we get for restricted removal spells the closer we get to having approximately that card exist for any given Cube