Reclaimed Ruins

Reclaimed Ruins enters the battlefield
tapped.
{t}: Add {w}, {r}, or {g} to your manapool.
Whenever you cast a white, red or green
spell, put a Follower counter on Reclaimed Ruins.
If Reclaimed Ruins has five or more Follower counters on it, white, red and green spells
you cast cost {1} less to cast.