Sacrifice a creature: This creature gains flying until end of turn.

Start your engines! (If you have no speed, it starts at 1. It increases once on each of your turns when an opponent loses life. Max speed is 4.)
: This creature gets +1/+1 until end of turn.
Max speed — , Exile this card from your graveyard: Draw a card.

Flying
When Ray Fillet enters, create a Mutagen token. (It's an artifact with ", , Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")
, Remove a +1/+1 counter from a creature you control: Draw a card.

Flash
When Red Guardian enters, destroy target creature an opponent controls that dealt damage this turn.

, Sacrifice this land: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Flying (This creature can't be blocked except by creatures with flying or reach.)
Haste (This creature can attack and as soon as he comes under your control.)
At the beginning of combat on your turn, another target creature you control gets +1/+0 and gains haste until end of turn.

Sanar enters prepared. (While it's prepared, you may cast a copy of its spell. Doing so unprepares it.)
: Create a Treasure token. Activate only if you've cast an instant or sorcery spell this turn.

Whenever this creature enters or attacks, create a 3/1 colorless Wall artifact creature token with defender named Stone Boulder.
, Sacrifice an artifact: This creature deals 4 damage to any target.

Whenever this creature attacks, another target attacking creature can't be blocked this turn.

Molten Note deals damage to target creature equal to the amount of mana spent to cast this spell. Untap all creatures you control.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

At the beginning of your upkeep, you gain 1 life.

Vigilance
Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, put a possession counter on this creature.
When this creature dies, create an X/X blue Spirit creature token with flying, where X is the number of counters on this creature.

Create a token that's a copy of target creature you control.
Flashback (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Exhaust — : Put a double strike counter on Mai. (Activate each exhaust ability only once.)

, : Search your library for a card named Dragonstorm Globe or Boulderborn Dragon, reveal it, put it into your hand, then shuffle.

Whenever Hei Bai enters or attacks, you may sacrifice another creature or artifact. If you do, put two +1/+1 counters on Hei Bai.
When Hei Bai leaves the battlefield, put its counters on target creature you control.

Infusion — Look at the top four cards of your library. You may reveal a creature or land card from among them and put it into your hand. If you gained life this turn, you may instead reveal two creature and/or land cards from among them and put them into your hand. Put the rest on the bottom of your library in a random order.

Flying
Whenever this creature attacks, target creature defending player controls gets -2/-0 and loses flying until your next turn.

Web-slinging (You may cast this spell for if you also return a tapped creature you control to its owner's hand.)
When Spiders-Man enters, if they were cast using web-slinging, you gain 3 life and create two 2/1 green Spider creature tokens with reach.

Whenever you cast a noncreature spell, this creature gets +1/+0 until end of turn and can't be blocked this turn.