Mana Confluence

{T}, Pay 1 life: Add one mana of any color.

Reverse the Sands

Redistribute any number of players' life totals. (Each of those players gets one life total back.)

Until end of turn, whenever a player gains life, that player loses 2 life for each 1 life they gained.

({T}: Add {R} or {W}.)
As Sacred Foundry enters, you may pay 2 life. If you don't, it enters tapped.

{T}: Add one mana of any type that a land you control could produce.