(: Add or to your mana pool.)
When Thicket Cairns enters the battlefield, sacrifice it unless you pay .
: Thicket Cairns becomes a 2/2 green Beast creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.).
: Thicket Cairns becomes a 2/2 green Beast creature until end of turn. It's still a land.
