Land
3UU, Tap an untapped Plains you control, T, sacrifice ~this~: search your library for a Island card and put it into the battlefield, then shuffle your library
T: add 1 to your mana pool
--Humanity cares greater than even the cannon never
– Sandruu (not the Urza's Saga one)

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Land
T: add R to your mana pool
At the beginning of your upkeep, target noncolourless creature gets +2/+2 until end of turn
Tap an untapped blue creature you control: clash with an opponent. If you win, target nonblue creature gains flying until end of turn and tap that creature
--Nature envies the proper sofa but embiggens even the most aspirational dime
– Anonymous

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Land
WW, Sacrifice a land, T: add 2W to your mana pool

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AlexChurchill/MagicCardGenerator