Land
~this~ enters the battlefield tapped.
T: add G to your mana pool
Whenever you discard a card, target opponent may pay X green mana, where X is the number of colours among permanents an opponent controls. If that player doesn't, you may return any number of cards from your graveyard to the battlefield

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2RRU
Legendary Artifact
At the beginning of each player's combat phase, you may Sacrifice a black creature. If you don't, flip ~this~.
- - - - -
Legendary Artifact
At the beginning of each opponent's upkeep, ~this~ deals 3 damage to target creature or player
Sacrifice ~this~: attach target Equipment to target creature. (Control of that Equipment doesn't change.)
creature spells cost you an additional ''Discard a card'' to cast

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Land
T: add 2 to your mana pool
R, T, sacrifice ~this~: each player may search his or her library for up to four basic land cards and put them into the battlefield. Each player who searched his or her library this way shuffles it.
All nonlegendary artifacts gain protection from white
Whenever one or more permanents becomes the target of a sorcery spell, copy target Arcane spell and you may choose new targets for the copy
1R: target artifact creature gets +4/+0 until end of turn
-- When provoked, Her action embiggens even the best rose
– Nursery Rhyme (Trad.) (dead)

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AlexChurchill/MagicCardGenerator