Hollow Dogs

U: This creature gains flying until end of turn.

This land enters tapped. T: Add R. Cycling 2 (2, Discard this card: Draw a card.)

Counter target spell.

Flying This creature can block only creatures with flying.

Flying 3U: Untap this creature.

This land enters tapped. T: Add B. Cycling 2 (2, Discard this card: Draw a card.)

When this creature becomes the target of a spell or ability, sacrifice it.

Enchant land Whenever enchanted land is tapped for mana, its controller adds an additional G.