Whenever Mire Flagstones becomes tapped, it deals 1 damage to you.
: Add
to your mana pool. Activate this ability only if you control a Swamp.
: Add
to your mana pool. Activate this ability only if you control a Plains.

: Mire Flagstones becomes a 2/1 black and white Skeleton creature until end of turn. It's still a land.