Fortress Taergoria

Fortress Taergoria enters the battlefield tapped.
{t}, Pay 1 life: Add {w}, {r}, or {g}.
Whenever a creature enters the battlefield under
your control, you gain 1 life.
"It's the best lit castle around, I suppose. Mostly
'cause the roof fell in a ways back."
- Grete, Turan Village Innkeep