Nissa, Who Shakes the World

Every Forest you tap pays out twice the moment this planeswalker resolves, and it does so without the strings its predecessors carried. Gaea's Cradle scales off creatures you can lose; Nykthos, Shrine to Nyx off a devotion count that removal whittles down. Here the trigger is the land type itself, so the ramp arrives with no body to kill and no color pips to prune. Each Forest already in play doubles the instant this lands, and every one drawn afterward compounds the same way. The +1 turns that surplus into a clock: it animates a noncreature land into a hasty, vigilant Elemental, and since it untaps the target in the process, the animation refunds mana rather than costing it (loyalty abilities were never going to cost any to begin with). Nothing here demands you sink the flood somewhere: the flood is simply present, and the plus ability builds a threat from the very lands generating it. The ultimate is a formality by the time it lands, but the indestructible emblem and the Forest tutor into play protect the lands the doubling depends on, sealing the loop. It reads like a ramp payoff and plays like a self-defending mana engine, and it warped its era for a blunt reason: a resolved copy doubled every subsequent turn's output for free, and the opponent had no creature or devotion count to attack to slow it down.