Jen the Stawlart

0: Gain one life, at the end of your turn but a loyalty counter on Jen the Stalwart for each untapped creature you control
-4: Search your library for Arianna the Child and put her onto the battlefield, or target Target Arianna gains Lure and indestructible
-X: Untap X lands, gain X life, and up to X creatures gain vigilance until end of turn. If X is 50 or more you win the game