Avid Follower

4/2 first encounter {5}{u} instant - adventure. target creature fights target creature. then gain control of target creature.
{x}{u}{u}{u}: monstrosty X. when this creature becomes monsterous, each opponent exiles the top X card of their decks.
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Protection from red
{2}{u}{u}: copy target spell.
{u}{u}: this creature gets hexproof or flying until end of turn