Searching Hydra

Vigilance, Trample
When Searching Hydra enters the battlefield, choose one-
• Search target opponent’s library for a card, and they then discard that card.
• Search target opponents library for a permanent , and pay {g}{g}{g}. You gain control of that permanent. If it’s a creature, it fights another creature you don’t control. Then at the beginning of your next end step, put the card into its owner’s library.
{2}: Searching Hydra’s toughness equals X until end of turn.