Bait

Enchant creature
Forecast — {u}{u}, Reveal Bait from your hand:
Create a 0/1 blue Worm creature token with
provoke and attach Bait to it.
Enchanted creature has "{u}{u}{u}, Sacrifice this creature: Search your library for a blue creature
card with mana value equal to 1 plus this
creature's mana value, put that card onto the battlefield tapped, shuffle, then return Bait to
the battlefield attached to that creature."