When Bangtan Security enters, target creature gets +2/+0 and gains indestructible until end of turn.

Vigilance
Whenever this creature transforms into Crown Betrayer or another permanent you control transforms, Crown Betrayer gets +2/+0 and gains indestructible until end of turn.

Flash
Vigilance
Whenever Exuberant Caprisaur attacks or blocks, you gain 2 life. Then if your life total is greater than 20, put two +1/+1 counters on Exuberant Caprisaur.

Vigilance
Whenever Mokar Warband attacks, create a 1/1 white Human creature token that's attacking.

{1}, Remove a +1/+1 counter from Traveler of Dawn: Exile target creature. Return that card to the battlefield under its owner's control at the beginning of the next end step.

Equipped creature gets +2/+2.
Equip {2}
Spellcharge 4

Dormant Monstrosity enters tapped with three stun counters on it.
{1}{U}, Remove a counter from Dormant Monstrosity: Draw a card.

When Masked Duo enters, tap up to one target creature. If you control an artifact, that creature doesn't untap during its controller's next untap step.

Prowess, prowess

Menace
Whenever you cast an artifact spell, each opponent loses 2 life.

Whenever a creature dealt damage by Fleshbearer this turn dies, integrate that creature.
Fleshbearer gets +2/+0 and has menace as long as a creature card is integrated onto it.

Menace
Whenever Gelthis deals combat damage to a player, that player reveals their hand. You choose a nonland card from it. Exile that card until Gelthis leaves the battlefield.
Spellcharge 4

Ward—Sacrifice a permanent.
Whenever Host of the Neverending Revel enters or attacks, each player sacrifices a nonland, nontoken permanent. For each player who doesn't, you draw a card.

Flying
When Malicious Skycleaver enters, pay any amount of life. It deals that much damage to each other creature.
Cybersoul {7}{B}{B}

Approval — When Senators' Chauffeur enters, return up to one target creature card with mana value less than or equal to the number of colors among permanents you control from your graveyard to the battlefield.

Silvereye Scout can't be blocked except by three or more creatures.

Whenever Steelhorn Crusher or another artifact you control enters, artifact creatures you control gain menace until end of turn.

Favored
Whenever your Champion deals combat damage to a player, create that many Treasure tokens.

Whenever an attacking creature you control dies, Bleeding Edge Memorial deals 1 damage to defending player.
Spellcharge 4

Defender
Whenever you cast an instant or sorcery spell, Dormant Slagheap loses defender until end of turn. If that spell was cast from your graveyard, put a +1/+1 counter on Dormant Slagheap.

Trample, haste
Decayed

As an additional cost to cast instant and sorcery spells, you may pay {X}, where X is that spell's mana value. If you do, copy that spell, and you may choose new targets for the copy.
Spellcharge 4

Prowess
When Speaker of the Lightning enters, return target instant or sorcery card from your graveyard to your hand.

Trample
When Centaur Mentor enters, target creature gets +X/+0 until end of turn, where X is your devotion to green.

Trample
When Imperfect Fugisaur enters, you may sacrifice an artifact. If you do, it gains haste until end of turn.
Whenever Imperfect Fugisaur deals combat damage to a player, that player sacrifices an artifact. If they can't, you draw a card.