Hydran Wurm

Reach, Islandwalk, Mountainwalk, Forestwalk
When Hydran Wurm enters the battlefield or attacks, sacrifice target artifact or land of colors {b}, {r}, or {g}, then search your library for a creature, put it on the battlefield, then, have that creature fight target creature you don't control. Whoever wins the fight gains 3 life.
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"Sometimes, sacrifices must be made, for the power of light can't and s