Timeshifted

Mistform Ultimus is every creature type (even if this card isn't on the battlefield).

{T}: Destroy target creature with islandwalk.

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

Trample Leviathan enters the battlefield tapped and doesn't untap during your untap step. At the beginning of your upkeep, you may sacrifice two ...

You may choose not to untap Giant Oyster during your untap step. {T}: For as long as Giant Oyster remains tapped, target tapped creature doesn't u...

Flying {U}{U}{U}: Regenerate Ghost Ship.

Flying

Sacrifice an enchantment: Auratog gets +2/+2 until end of turn.

Dandân can't attack unless defending player controls an Island. When you control no Islands, sacrifice Dandân.

Flanking (Whenever a creature without flanking blocks this creature, the blocking creature gets -1/-1 until end of turn.) {1}{W}{W}: Target Knight ...

{T}: Witch Hunter deals 1 damage to target player or planeswalker. {1}{W}{W}, {T}: Return target creature an opponent controls to its owner's hand.

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

Protection from red Shadow (This creature can block or be blocked by only creatures with shadow.)

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...

Trample

If a spell or ability an opponent controls causes you to discard Dodecapod, put it onto the battlefield with two +1/+1 counters on it instead of pu...

{T}: Until end of turn, target creature has base power 1 or base toughness 1.

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

Swampwalk (This creature can't be blocked as long as defending player controls a Swamp.) Whenever a player casts a black spell, you gain 1 life.

Icatian Javelineers enters the battlefield with a javelin counter on it. {T}, Remove a javelin counter from Icatian Javelineers: It deals 1 damage ...

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

Flying At the beginning of your upkeep, sacrifice Nicol Bolas unless you pay {U}{B}{R}. Whenever Nicol Bolas deals damage to an opponent, that play...

Flash When Mystic Snake enters the battlefield, counter target spell.