Land
3, T: add 1 to your mana pool
T: add 3 to your mana pool
Whenever ~this~ becomes tapped, add G to your mana pool. Spend this mana only on spells.
T, Sacrifice a Mountain: each player gains 4 life
When ~this~ leaves the battlefield, attach target Equipment to target creature with flying. (Control of that Equipment doesn't change.)

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AlexChurchill/TypeFourLandGenerator