Anticausal Vestige

The leave trigger is where this design lives, and every path off the battlefield walks through it. Cast for the reduced warp cost and a 7/5 arrives with a lease attached: it exiles when the turn winds down and can be recast from exile later. That exile is itself a leaving, so it fires the trigger, as does killing it or bouncing it. Each time, you draw and may drop a permanent into play tapped, with the ceiling set not by a fixed number but by how many lands you control. That land-count clause is what ties the payoff to the shape of the game: warp it out on an early turn and you cheat something modest onto the board; wait until your mana has grown and the entire top of your curve is fair game. The consequence is a creature that will not resolve into a two-for-one against you. Answer it however you like, or simply let the exile carry it away, and it settles up in cards, with a free permanent on offer whenever you have one to play. Eldrazi have usually made their bulk the selling point and treated the exit as a punishment aimed at the opponent. This one flips the order of operations: the 7/5 is almost beside the point, a body you happen to get while the departure does the real work.