mtg card that makes all lands swamps Swamp (34) [Duel Decks: Phyrexia vs. the Coalition] MTGNexus - Swamp Fiend, Markuta

For example, if you have 3 life and an effect says that your life total "becomes 10," you would gain 7 life which The Wind Crystal doubles to 14, so your life total will actually become 17

The boros variant that came to my mind works with Gargadon and Stuff like Rukh Egg, as well as with floating mana like Upheaval

8 Miraris Wake A real Commander classic, Miraris Wake provides two powerful effects in one spherical package: an Anthem effect for all of your creatures, and a mana-doubling effect for all of your lands

Illustrated by Anton Solovianchyk Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Not Legal Brawl Not Legal Legacy Legal Comp