Arem, Shadows Glint

Rats you control get+1/+0.
Whenever a Rat you control deals combat
damage, draw a card then discard a card.
Sacrifice a Rat: Add one mana of any color.
1: Target Rat in a graveyard gains Raise (This creature may be cast from the graveyard for its mana
cost. When it enters the battlefield it gains Decayed.)