Rydia, Summoner of Mist

A Saga-reanimation engine and its own enabler compressed into a 1/2 body, which is the surprising part: the payoff and the fuel share a single card. The Landfall rummage turns every land drop into filtration (discard first, then draw), which refines your hand and stocks the graveyard with the very Sagas the Summon ability wants back, so the two halves feed each other on a natural curve. Recursion this cheap needs a governor, and it comes from the counter placed on each returned Saga: one full run through its chapters before it exiles rather than dies, so the ability is never a grindy loop but a sequence of one-shot detonations you have to time deliberately. The X in the cost lets it reach across the entire range of Saga mana values, but only by tapping and only as a sorcery, so the reanimation is a proactive main-phase commitment rather than a reactive trick. What gives the card its distinct texture is that Sagas advance on their own schedule, adding a lore counter and firing a chapter at the beginning of your precombat main phase; you are not looping a permanent for repeated triggers, you are re-arming a countdown and choosing when to start the clock. The haste rider is nearly vestigial: haste matters only to a permanent that can attack or tap, which a Saga cannot until one of its chapters turns it into a creature, so the real decision is always which Saga you bring back, and when.