Super mardi

Other Merfolk creatures you control get +1/+1 and have islandwalk. (They can't be blocked as long as defending player controls an Island.)

Target opponent mills seven cards.

Counter target noncreature spell.

[+3]: Destroy target noncreature permanent. [−2]: Gain control of target creature. [−9]: Nicol Bolas deals 7 damage to target player or planeswalke...

You may cast spells from your hand without paying their mana costs.

You may choose new targets for target spell.

Counter target spell. Untap up to four lands.

Whenever this creature deals combat damage to a player, draw a card.

Tap all creatures target player controls. Those creatures don't untap during that player's next untap step.

Exile target instant or sorcery card from your graveyard and target instant or sorcery card from an opponent's graveyard. Copy those cards. Cast th...

Flying When this creature enters, reveal the top five cards of your library. An opponent separates those cards into two piles. Put one pile into yo...

Islandwalk (This creature can't be blocked as long as defending player controls an Island.) All lands are Islands in addition to their other types....

Exchange control of two target creatures.

Whenever you cast an instant or sorcery spell, create a 2/2 blue Drake creature token with flying.

Create two 2/2 blue Drake creature tokens with flying.

Enchant creature Enchanted creature gets +2/+0 and can't be blocked.

Return target creature to its owner's hand.

{U}, {T}: Target player mills two cards.

{2}{U}, {T}: Put this creature and target creature on top of their owners' libraries, then those players shuffle their libraries.

{U}: This creature gets +1/-1 until end of turn.

Flying (This creature can't be blocked except by creatures with flying or reach.) This creature can block only creatures with flying.

Flying

Target player draws X cards. Shuffle Blue Sun's Zenith into its owner's library.