Thopters you control get +2/+0.
At the beginning of your upkeep, conjure a card named Ornithopter into your hand.

, : Gain control of target legendary permanent. (This effect lasts indefinitely.)

Devoid
Flying
Whenever you draw your second card each turn, create a 0/1 colorless Eldrazi Spawn creature token with "Sacrifice this token: Add ."

Affinity for artifacts
When Emry enters, mill four cards.
: Choose target artifact card in your graveyard. You may cast that card this turn. (You still pay its costs. Timing rules still apply.)

Level up

Multikicker
Islandwalk
This creature enters with a +1/+1 counter on it for each time it was kicked.

Flying
Whenever this creature attacks, it becomes prepared.

, Sacrifice this creature: Target player mills three cards.
Whenever you cast a multicolored spell, you may return this card from your graveyard to your hand.

Prowl
Flying
When this creature enters, for each opponent, return up to one target nonland permanent that player controls to its owner's hand.

When this creature enters, create a 3/2 colorless Eldrazi Horror creature token.

Strange new worlds — When Ensign Chekov enters, each opponent exiles the top X cards of their library, where X is the number of differently named lands you control. For each opponent, choose a land card that player owns exiled this way. You may play the chosen cards for as long as they remain exiled.

Flash
Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, draw a card.

Flying
When this creature enters, if you cast it, target opponent takes an extra turn after this one. Until your next turn, you and planeswalkers you control gain protection from that player.

Flying
Discard a card: Return this creature to its owner's hand.

Flying
Whenever the fourth spell of a turn is cast, flip Erayo.

Flying
Whenever you investigate for the first time each turn, investigate an additional time.

Flying
Suspend 4 —

Flash
Defender, haste
, : Copy target spell you control that wasn't cast. You may choose new targets for the copy.

Flying, vigilance
Eerie — Whenever an enchantment you control enters and whenever you fully unlock a Room, this creature gets +1/+1 until end of turn.

, : Draw a card, then discard a card.

, : Counter target spell.

Phasing
When this creature phases out or leaves the battlefield, mill three cards.
: Until your next upkeep, this creature can't phase out.

Whenever you draw your second card each turn, put a +1/+1 counter on this creature.

This creature can't be blocked.
, Discard a card: Return this creature to its owner's hand.

As long as an opponent controls a creature with flying not named Escaped Shapeshifter, this creature has flying. The same is true for first strike, trample, and protection from any color.

Flying
Spells your opponents cast that target one or more commanders you control cost more to cast.
Partner

Afflict 2
Whenever this creature attacks and isn't blocked, draw a card.

When this creature enters, amass Zombies 2.
Zombie tokens you control have flying.

Delve
Flying
Whenever this creature attacks, you may return an instant or sorcery card exiled with this creature to its owner's hand.

Flying
When this creature enters, investigate X times, where X is the number of opponents you have.
Whenever you draw your second card each turn, create a 1/1 white Spirit creature token with flying.