City of Enchanted Waters

{t}: Add {1} to your mana pool for every instant
and sorcery card in your graveyard.
Spell mastery - If there are two or more instants and/or sorcery cards in your graveyard, City of Enchanted Waters loses all other abilities and gains, '{t}: Add {1} to your mana pool for every
two instants and sorcery cards in your graveyard.'
"No wizarding school could ever combat this." -Remn