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And given youre in the colors of reanimator, you can quite reliably sacrifice some pretty high mana value permanents

Kaalia of the Vast is pure explosiveness

Thopter Engineer Thopter Engineer is a three-cost (two generic and one red) creature

Commanders Plate is fetchable off of Urzas Saga, and gets you protection from most of the colors that can remove your Commander

Despite the fact that the Marks effect is over, you continue to control the Elemental thanks to its own ability: Control the Elemental as long as you control the Elemental

A single Draco Meteor can finish the game if you are lucky and everything aligns