Temple of Antel

Temple of Antel enters the battlefield
tapped.
{t}: Add {u}, {b}, or {g} to your manapool.
Whenever you cast a blue, black or green spell, put a Follower counter on Temple of Antel.
If Temple of Antel has five or more Follower counters on it, blue, black and green spells
you cast cost {1} less to cast.