Havenwood Flagstones enters the battlefield tapped unless you reveal a nonbasic land card from your hand.
,
: Add 
, 
or 
to your mana pool. Havenwood Flagstones deals 1 damage to you.

: Havenwood Flagstones becomes a 2/2 green and white Treefolk creature with trample until end of turn. It's still a land.