Guild Pact (Unknown Event #RC01d)

Guild Pact {0}

Instant

Choose two colors. Add a mana of each of the chosen colors.

At the beginning of your next upkeep, pay one mana of each of the chosen colors. If you don’t, you lose the game.

Standard
Alchemy
Pioneer
Explorer
Modern
Historic
Legacy
Brawl
Vintage
Timeless
Commander
Pauper
Oathbreaker
Penny