Howlpack Piper // Wildsong Howler

Players have been cheating creatures into play since Elvish Piper and Quicksilver Amulet, but those enablers dropped one monster and then sat there tapped, waiting on the next turn. This one keeps working within a single turn: pay , tap it to put a creature down, and if that creature is a Wolf or Werewolf the piper untaps for another go. Each activation still costs its own , so the chain is bounded by mana rather than by the tap symbol, but a runout of green sources becomes a runout of bodies, and the sorcery-speed clause is the only real brake once the mana is there. The uncounterable line matters more than it looks: an enabler this pivotal is exactly what an opponent wants to answer on the stack, and this one simply resolves. The transform half saves it from being a fragile one-note engine. Under Nightbound the activated ability goes dormant, but every flip to Wildsong Howler digs six deep for a creature to refill the hand, so the two faces patch each other's gap: the piper spends cards to build a board on the day it can act, the howler restocks the hand on the night it cannot. The design lives in that alternation, and which half you get depends on whether the table is casting spells fast enough to hold the day.