msem-instigator

Haste
Whenever Emblazoned Qilin attacks, it gains flying until end of turn if it's in a pack. (Two or more creatures you control with equal power are in a pack.)

Haste
Other Elementals you control get +1/+0 and have haste.

Trample
Assault {2}{R}{G} (Whenever this attacks, if it has no +1/+1 counters on it, you may pay its assault cost to put a +1/+1 counter on it.)
If one or more +1/+1 counters would be put on a creature you control, that many plus one +1/+1 counters are put on it instead.

Chosen one ({W}{U}{B}{R}{G}: Transform this permanent.)
At the beginning of combat on your turn, create a 1/1 red Warrior creature token with haste. That token attacks this combat if able.

Artifact creatures you control can't be blocked by nonartifact creatures.
{2}{U}{R}: Put a +1/+1 counter on an artifact creature you control or a progress counter on a Project you control.

Vigilance
Art of war — At the beginning of your end step, if Emperor Kenshiro dealt damage to an opponent this turn, you may put a creature card from your hand onto the battlefield tapped.

Empress Kogane can't attack or block.
Whenever an opponent casts a spell, you may gain life equal to that spell's mana value.

Desecrate (When this creature enters, you may sacrifice an artifact or land.)
When Encrusted Sahalia desecrates a permanent, it deals 3 damage to target player.

Sacrifice a creature: Put a +1/+1 counter on Endak City Slavedriver. Activate only as a sorcery.

When Endmire Scourer dies, search your library for a card with mana value 4 or less, reveal it, put it into your hand, then shuffle.

When Endrison Harvester enters, you may search your library for a Swamp card, reveal it, put it into your hand, then shuffle.
{1}{B}: Endrison Harvester gets +1/+1 until end of turn.

Menace
Whenever you cast a noncreature spell, Enduring Charge gets +1/+1 until end of turn.

{1}: Target Equipment becomes a colorless 3/3 Construct artifact creature until end of turn. (Equipment that's a creature can't equip a creature.)
{2}{U}{U}, {T}: Return target artifact card from your graveyard to your hand.

Whenever you cast a spell during an opponent's turn, put a +1/+1 counter on Entelan Duelist.
{2}{U}{R}, Remove two +1/+1 counters from Entelan Duelist: Copy target instant or sorcery spell you control. You may choose new targets for the copy.

Improve {1} ({1}: Put a +1/+1 counter on this creature. This costs {1} more to activate for each +1/+1 counter on it. Improve only as a sorcery.)
{T}: Add one mana of any color.
{T}: Add X mana of any one color, where X is the greatest number of counters among creatures you control.

Harmony — Draw a card.
When Enthralling Actor enters, harmonize. (Trigger up to one harmony of one permanent you control.)

{T}: Envious Nereid deals 1 damage to target creature and 1 damage to that creature's controller.

Menace, ward {2}
Whenever Envoy of Divine Progress deals combat damage to a player, you may search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

Encourage ({T}: Another target creature you control gets +1/+1 until end of turn. Encourage only as a sorcery.)
Whenever Eos Beseecher encourages a creature, look at the top card of your library. If it's a creature card with power 2 or less, you may reveal it and put it into your hand.

Flying, haste
Whenever Epoch Warden attacks, you may aetherize another target attacking creature you control. (To aetherize, create a token that's a copy of it, then exile that token.)

Whenever you cast an instant or sorcery spell, create a 1/1 red Alien creature token with “This creature can't block.”
{2}{R}, Sacrifice two Aliens: Copy target instant or sorcery spell you control. You may choose new targets for the copy.

Artifacts you control have “{T}: Add one mana of any color.”
{2}{R}{G}: Create a 3/2 green Crocodile creature token with trample. It gains haste until end of turn.

When Esiara, Skycaster's Infiltrator enters, exile target spell with mana value 4 or less.
{1}{U}{U}, Discard two cards: Exile Esiara, then return it to the battlefield under your control.
{2}{U}{U}, {T}, Exile Esiara: Until end of turn, you may play cards you don't own from exile.

Flying, vigilance
Embattled creatures you control have ward {1}. (A creature is embattled if it has a counter on it or a permanent you control attached to it.)
Whenever one or more creatures you control deal combat damage to a player, put a +1/+1 counter on one of those creatures.

Wither (This deals damage to creatures in the form of -1/-1 counters.)
Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)