The Lava Zone

The Lava Zone enters the battlefield tapped
{t}: Add {b} or {r}. Gain a ray counter
{2},{t}: As an additional cost to this ability, tap
target permanent. Add any combination of 5
mana between swamp and mountain
When The Lava Zone has 7 ray counters on it,
create a 5/5 Lava Ray creature token with
vigilance