Whenever you cast a spell that’s one or more colors, you may gain 1 life for each of that spell’s colors. Do this only once each turn. : Add one mana of any color.
"I reckon that thing's trying to put me out of a job!"
—Bristly Bill, cactusfolk gardener
Ancient Cornucopia’s triggered ability counts the number of colors the spell has (from one to five), not how many colored mana symbols there are in its mana cost or how many colors of mana you spent.
12-04-2024
wotc
Once you choose to gain life using Ancient Cornucopia’s triggered ability, that ability won’t trigger again that turn.
12-04-2024
wotc
Ancient Cornucopia’s triggered ability resolves before the spell that caused it to trigger. The ability will resolve even if that spell is countered. If that spell is countered, use its last known information to determine what colors it was.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.