At the beginning of your upkeep, Blackcleave Skerry deals 1 damage to target creature you control.

: Add  or to your mana pool.

Put Blackcleave Skerry on top of your library: Add  to your mana pool.

: Blackcleave Skerry becomes a 1/1 blue and black Skeleton Zombie creature with flying until end of turn. It's still a land.