Mana Abundance

World Enchantment

If a player would add mana, instead all players add that mana.

2019-11-12:
If two or more permanents with the world supertype are on the battlefield, all but the most recent one are put into their owners’ graveyards. In case of a tie, all are put into their owners’ graveyards.
2019-11-12:
Any restrictions or riders on the original mana are applied to each player’s mana. If those refer to “you,” they refer to the player who adds that mana.
2019-11-12:
All of the mana is produced by the source of the original mana, not by Mana Abundance.