Ellywick Tumblestrum

The dungeon mechanic asks for a repeatable engine to justify its printed reward, and this is the planeswalker built to be that engine. Every plus advances a run through a room, quietly assembling toward the emblem while the walker climbs above four loyalty and refuses to fall behind. What sells the card is that the minus is not filler to protect it: digging six deep for a creature and gaining three life off a legend means the down-tick pays its own way, so the planeswalker generates value on both sides of the ledger rather than treading water until the ultimate. That structure is unusual for a four-mana green walker, which historically had to choose between a defensive plus and a card-advantage minus; here the venture keyword lets the plus do double duty as both defense and progress toward a game-ending payoff. The ultimate itself scales off differently named dungeons completed, which means the reward is not a fixed number but a function of how much of the mechanic you actually engaged with. Trample and haste stapled to a stacking anthem turns a wide board into lethal the turn it resolves, and the more dungeons you finished getting there, the larger the swing. It is a green planeswalker whose whole design points toward a creature deck patient enough to run the dungeons and then cash them in all at once.