Cyclone Sire

The death trigger is the whole reason to look twice. Most "leaves something behind" designs swap a dead creature for a token or recur it to hand; this one instead promotes a land you already control into a 3/3 with haste, routing the payoff through a permanent the opponent rarely bothers to hold up interaction against. The removal spell that answers the flyer just leaves them staring at an animated land in the manabase, and that land is exactly as fragile to a wrath or to land destruction as any other creature, which keeps the engine from being free: you convert one threat into another rather than getting anything for nothing. The haste is more situational than the rate suggests. It only matters when the Sire dies on your turn before the declare attackers step, since a death during combat happens after attackers are locked in: a chump block or a combat trade kills the flyer, but the new land-creature has missed its window and cannot swing that turn. Where haste actually pays off is a sacrifice outlet or a self-inflicted death cracked early in your main phase, turning a piece you were going to lose anyway into an immediate attacker. The structural idea underneath the tidy text is converting a removal spell's tempo into board presence on an axis most decks are not built to answer, and the counters mean the resulting body swings for real damage rather than serving as a token speed bump.