There are so many creatures that almost say "If this creature attacks, you win the game" and the Facetaker can copy any of them
The last ability of Nine Lives triggers no matter how it leaves the battlefield
When Olle Rde won the first invitational, his first suggestion for his invitational card was an Enchant World for one mana with no effect, simply to destroy other Enchant Worlds (though I guess he could have designed it with Substance and Rampage for the same effect)
Scavenging Ooze + Lion Sash + Keen-Eyed Curator Efficient creatures that grow as they hate on the graveyard are powerful
The cards needed to complete this deck include Nihilego x1, Mega Absol ex x1, Deino x2, Hydreigon x2, Cyrus x1, Pokmon Center Lady x1, Rare Candy x2, Poison Barb x2, Copycat x2, Lucky Ice Pop x1, Hiking Trail x1, Pok Ball x2, and Professor's Research x2
Ravnica Allegiance has a whole host of sweet designs, from Temur throwbacks and six engine cards to a blink effect evocative of Minority Report and a powerful twist on Goblin Fireslinger