Razortooth Rats

Flying T: Add one mana of any color.

(T: Add G.)

2UU: Look at the top five cards of your library, put one of them into your hand, and exile the rest.

Flying R: This creature gets +1/+0 until end of turn. Activate only once each turn.

White creatures get -1/-1.

T: Add C. T: Add B or R. This land deals 1 damage to you.

Flying Sacrifice this creature: Counter target red instant or sorcery spell.

(T: Add U.)