Awesome Cyber Monday

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

{T}: Add {C}. {T}: Desert deals 1 damage to target attacking creature. Activate this ability only during the end of combat step.

{T}: Add {G}. {T}: Target 1/1 creature gets +1/+2 until end of turn.

Target opponent discards a card at random, then discards a card.

Whenever a Sliver becomes blocked, that Sliver gets +1/+1 until end of turn for each creature blocking it.

Kicker {X} (You may pay an additional {X} as you cast this spell.) Saproling creatures and other Treefolk creatures get +1/+1. When Verdeloth the A...

Spike Feeder enters the battlefield with two +1/+1 counters on it. {2}, Remove a +1/+1 counter from Spike Feeder: Put a +1/+1 counter on target cre...

Fiery Temper deals 3 damage to any target. Madness {R} (If you discard this card, discard it into exile. When you do, cast it for its madness cost ...

{1}: Exile target card from a graveyard.

Flying Whenever Swamp Mosquito attacks and isn't blocked, defending player gets a poison counter. (A player with ten or more poison counters loses ...

Choose one — • Target player discards a card. • Target creature gets +2/-1 until end of turn. • Target creature gains swampwalk until end of turn. ...

Non-Eye creatures you control can't attack. Evil Eye of Orms-by-Gore can't be blocked except by Walls.

Flying

First strike As long as Valor is in your graveyard and you control a Plains, creatures you control have first strike.

Gemstone Mine enters the battlefield with three mining counters on it. {T}, Remove a mining counter from Gemstone Mine: Add one mana of any color. ...

{T}, Sacrifice Tormod's Crypt: Exile all cards from target player's graveyard.

Serrated Arrows enters the battlefield with three arrowhead counters on it. At the beginning of your upkeep, if there are no arrowhead counters on ...

Mindless Automaton enters the battlefield with two +1/+1 counters on it. {1}, Discard a card: Put a +1/+1 counter on Mindless Automaton. Remove two...

{1}, Sacrifice a permanent: You gain 1 life.

Assault deals 2 damage to any target.

As Teferi's Moat enters the battlefield, choose a color. Creatures of the chosen color without flying can't attack you.

Flying, first strike, vigilance, trample, haste, protection from black and from red

Target player shuffles up to three target cards from their graveyard into their library. Draw a card. When Gaea's Blessing is put into your grave...

Trample Rampage 2 (Whenever this creature becomes blocked, it gets +2/+2 until end of turn for each creature blocking it beyond the first.)