Land
T: add W to your mana pool

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3U
Artifact Creature - Myr (3/1)
3, Pay 3 life: all creatures with flying gain flying (This effect doesn't end) and those creatures get -3/+3 until end of turn
Sacrifice a Myr: all permanents gain ''When ~this~ is put into a graveyard from the battlefield, put a +1/+1 counter on up to six target tapped artifact creatures'' until end of turn

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1BB
Sorcery - Generated
all artifact creatures gain ''Pay 4 life: put a doom counter on target enchantment'' and ''When ~this~ leaves the battlefield, put a doom counter on target land'' and ''T, Sacrifice a basic land: regenerate each enchantment with a doom counter on it'' and ''2: return target permanent with a doom counter on it to its owner's hand'' until end of turn

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AlexChurchill/MagicCardGenerator