Caedmon, the Collinator

+1: you get an emblem with, "whenever you cast a rat,create a 1/1 rat token with deathtouch"
-2: create a 1/1 rat with haste that has, "whenever this creature deals combat damage to a player, you may cast a rat without paying its mana cost."
-6: you get an emblem with, "all rats are unblockable and gain "whenever this creature deals combat damage, draw a card"