Super mardi

Skulk (This creature can't be blocked by creatures with greater power.)

Draw three cards. If you control no artifacts, discard a card.

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)

Flash (You may cast this spell any time you could cast an instant.) When Deputy of Acquittals enters the battlefield, you may return another targe...

Counter target noncreature spell.

Enchant creature, land, or planeswalker Enchanted permanent is a colorless land with "{T}: Add {C}" and loses all other card types and abilities.

Counter target noncreature spell.

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

Flying Geralf's Masterpiece gets -1/-1 for each card in your hand. {3}{U}, Discard three cards: Return Geralf's Masterpiece from your graveyard t...

Flash (You may cast this spell any time you could cast an instant.) Defender (This creature can't attack.) When Nivix Barrier enters the battlefi...

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.) {U}: Ingenious Skaab gets +1/-1 until end of turn.

Flying Megamorph {3}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its megamorph cost and put a +1/+...

Until end of turn, target creature you control becomes a blue and red Dragon with base power and toughness 4/4, loses all abilities, and gains flyi...

Support 2. (Put a +1/+1 counter on each of up to two target creatures.) Untap each creature you control with a +1/+1 counter on it.

Draw X cards, then discard a card.

When Thriving Turtle enters the battlefield, you get {E}{E} (two energy counters). Whenever Thriving Turtle attacks, you may pay {E}{E}. If you do,...

Indestructible As long as your devotion to blue is less than five, Thassa isn't a creature. (Each {U} in the mana costs of permanents you control ...

River Serpent can't attack unless there are five or more cards in your graveyard. Cycling {U} ({U}, Discard this card: Draw a card.)

Return up to two target cards with cycling from your graveyard to your hand.

Enchant creature Enchanted creature gets +1/+1 and has flying. Discard a card: Return enchanted creature to its owner's hand.

When Laboratory Brute enters the battlefield, mill four cards.

Draw three cards. Target player mills three cards.

Tap target creature. It doesn't untap during its controller's next untap step. Rebound (If you cast this spell from your hand, exile it as it reso...

Counter target instant or sorcery spell that targets you. Spell mastery — If there are two or more instant and/or sorcery cards in your graveyard, ...