B
Instant - Arcane
Choose one: target player may search his or her library for a card, reveal it, and put it into his or her hand. If that player does, that player shuffles that library afterwards.; or destroy any number of target nonblack creatures. They can't be regenerated.
Entwine X, where X is the number of cards in your hand

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3U
Creature - Merfolk Wizard (1/3)
When ~this~ enters the battlefield, counter target activated ability
When ~this~ enters the battlefield, target player may pay X, where X is the amount of mana in your mana pool. If that player does, gain control of target permanent (This effect doesn't end)
Pay 2 life: counter target spell or ability
1U, T: ~this~ gets -4/-0 (This effect doesn't end)

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UB
Creature - Human Wizard (1/3)
All blue creatures gain protection from sorcery spells

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AlexChurchill/MagicCardGenerator