Koth Ball

If a red instant or sorcery spell you control would deal damage, it deals double that damage instead.

+1: Untap target Mountain. It becomes a 4/4 red Elemental creature until end of turn. It's still a land. −2: Add for each Mountain you control. −5: You get an emblem with "Mountains you control have ': This land deals 1 damage to any target.'"

Red Sun's Zenith deals X damage to any target. If a creature dealt damage this way would die this turn, exile it instead. Shuffle Red Sun's Zenith into its owner's library.