Yzdea, Star Cartographer

Hexproof, Protection from multicolored
Abilities of permanents your opponents control
cost {1} more to activate for each Star you control
as long as they are not mana abilities.
{3}, {t}, Discard a card: Pick a color. Each card in exiles, hands, graveyards, and the battlefield have
an additional mana of that color in their mana
costs until end of game. Each player creates a colorless Star land token with "{t}: Add one mana
of any color. You lose 1 life."