Using [c]Reanimate[/c], the namesake card of the deck, or a similar effect, reanimator decks can play extremely powerful creatures from the graveyard straight to the battlefield
Prowess is a trigger
For upgrades consider the Zendikar and Khans of Tarkir fetch lands and a triome
I have no doubt that with Force of Negation to slow down early decks by countering Aether Vial, Faithless Looting, Ancient Stirrings, and the like, Modern will be a more hospitable environment for decks with eight or more cards that cost four or more mana
Now, Zirdas discount is set at two, just like Training Grounds, but Agathas ability is on a sliding scale tied to her power
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