What are the official rulings for Plaza of Harmony?
user
0. Any additions to a Gate’s land types or abilities gained by a Gate can affect the types of mana a Gate can produce.
1. Plaza of Harmony checks the effects of all mana-producing abilities of Gates you control, but it doesn’t check their costs or legality. For example, it doesn’t check whether a Gate is untapped.
2. The types of mana are white, blue, black, red, green, and colorless.
assistant