Champions of the Perfect
Behold usually asks for proof of loyalty and nothing more: you show the game you have the right creature and pocket a bonus. Here the keyword grows an exile clause that turns the gesture into a genuine additional cost paid on top of the full four mana. You are not discounting the 6/6; you are paying for it twice, once in mana and once in an Elf you commit to exile from your board or your hand. What makes the exchange palatable is the leaves-the-battlefield clause that returns the exiled card to its owner's hand: the Elf you feed it is lent, not spent. That one refund is what lets two opposite lines share a single slot. The greedy line exiles your best Elf now and banks on getting it back when the opponent removes the Champions; the conservative line feeds it a spent one-drop and treats the payment as free. The card-advantage engine keys off casting creature spells, not their resolution, so it pays out even when your spells are countered or fizzle, rewarding a board that keeps putting bodies on the stack. Green almost never draws in bulk without a leash, and the leash here is the up-front cost of the exile, not a recurring tax on the payoff. Fold in the return clause and the whole thing closes into a loop: eat an Elf to arrive, draw off every creature after, and hand the eaten Elf back on death so it can feed the next one.
