WW
Artifact
Imprint — Sacrifice a Swamp: you may exile target Generated spell card in an opponent's graveyard. (The exiled card is imprinted on this artifact.)
Sacrifice ~this~: add one mana of any of the imprinted card's colours to your mana pool for each land you control
When the number of basic land types among lands you control is 2 or less, flip ~this~.
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Legendary Artifact
If an opponent would gain life, instead target creature with total power and toughness 1 or less gains rampage that many until end of turn
Imprint — Tap an untapped permanent you control: you may exile target instant or sorcery card in an opponent's graveyard. (The exiled card is imprinted on this artifact.)
Sacrifice a Goblin: the imprinted card's converted mana cost permanents are artifacts in addition to their other types (This effect doesn't end)

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Land
BB, T: add 2 to your mana pool
Sacrifice ~this~, T: add B to your mana pool

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(G/W)(G/W)
Artifact
All colourless creatures gain rampage X, where X is the amount of mana in your mana pool
--Nature enlarges the fiercest apparel
– Nursery Rhyme (Trad.) (ascended)

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AlexChurchill/MagicCardGenerator