Artifact
All white creatures get +2/+3
At the beginning of your upkeep, you may pay W. If you don't, two target black creatures get +2/+2 (This effect doesn't end)
Imprint — When ~this~ enters the battlefield, you may exile a blue sorcery spell with converted mana cost 2 or more card in your hand. (The exiled card is imprinted on this artifact.)
Pay 1 life: the imprinted card's converted mana cost artifacts gain protection from blue until end of turn

Converted mana cost: 1

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AlexChurchill/TypeFourArtifactGenerator