Kerr, Caller of Warriors

+1: Create a 1/1 Warrior creature token with training and then put a +1/+1 counter on up to one target creature.
-3: Search your library for a Warrior card put it in your hand and then shuffle your library.
-7: You get an emblem with "Whenever you cast a Warrior card you may draw a card and put a Warrior card from your hand onto the battlefield.