Nitro-9 — Whenever Ace, Fearless Rebel attacks, you may sacrifice an artifact. When you do, put a +1/+1 counter on Ace, Fearless Rebel, then it fights up to one target creature defending player controls.

Doctor’s companion (You can have two commanders if the other is the Doctor.)

Whenever you cast a wordy spell, scry 2. (A spell is wordy if it has four or more lines of rules text.)

{1}{R}, {T}: Choose target creature you don’t control. Reveal the top card of your library. Alexander Clamilton gets +X/+0 until end of turn, where X is the number of lines of rules text of the revealed card. Alexander Clamilton fights that creature.

{4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

Amrou Seekers can’t be blocked except by artifact creatures and/or white creatures.

Flying

Vanishing 3 (This creature enters the battlefield with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)

When Aven Riftwatcher enters or leaves the battlefield, you gain 2 life.

{X}{W}, {T}: Ballista Squad deals X damage to target attacking or blocking creature.

When Big Game Hunter enters the battlefield, destroy target creature with power 4 or greater. It can’t be regenerated.

Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

{T}: Target player loses 1 life.

{4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

Enchant creature

Enchanted creature can’t attack or block.

Sacrifice Children of Korlis: You gain life equal to the life you’ve lost this turn. (Damage causes loss of life.)

Whenever Cho-Arrim Bruiser attacks, you may tap up to two target creatures.

Prevent all damage that would be dealt to Cho-Manno, Revolutionary.

Flying, haste

Echo—Discard a card. (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

Flying

{4}, {T}: Search your library for a Rebel permanent card with mana value 3 or less, put it onto the battlefield, then shuffle.

When Defiant Vanguard blocks, at end of combat, destroy it and all creatures it blocked this turn.

{5}, {T}: Search your library for a Rebel permanent card with mana value 4 or less, put it onto the battlefield, then shuffle.

Protection from green

At the beginning of each end step, if Dunerider Outlaw dealt damage to an opponent this turn, put a +1/+1 counter on it.

{T}: Tap target creature with toughness 2 or less.

You may have Flesh Duplicate enter the battlefield as a copy of any creature on the battlefield, except it has vanishing 3 if that creature doesn’t have vanishing. (A permanent with vanishing 3 enters the battlefield with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)