msem-instigator

{2}: Avaricious Ghul gets +1/+1 until end of turn. If mana from a Treasure was spent to activate this ability, put a +1/+1 counter on Avaricious Ghul instead.

Target creature can't block this turn. (Then exile this card. You may cast the creature later from exile.)

Deathtouch
Tribute 3 (As this creature enters, an opponent of your choice may put three +1/+1 counters on it.)
When Avatar of Amosis enters, if tribute wasn't paid, you may destroy target creature.

Each other colorless creature you control enters with an additional +1/+1 counter on it.

This spell costs {1} less to cast for each artifact and/or enchantment you control.
When Avatar of Innovations enters, you may return target artifact or enchantment card from your graveyard to your hand.

Crocodile creatures you control get +1/+1.
Avatar of Senmut and Crocodile creatures you control can't be blocked as long as you control four or more Islands.

Vigilance
Avatar of Utsenchep can block any number of creatures.
All creatures able to block Avatar of Utsenchep do so.

Trample
Avatar of the Groves enters with a +1/+1 counter on it for each land you control.
Landfall — Whenever a land you control enters, proliferate. (Choose any number of permanents and/or players with counters on them, then give each another counter of each kind already there.)

When Avaz Banner enters, attach it to target creature you control.
Equipped creature gets +2/+2 and is a Soldier Army in addition to its other types.
Equip {3}

First strike
When Avaz Cataphract enters, judge another target creature you control. (Honor it by putting a +1/+1 counter on it or condemn it by sacrificing it to draw a card.)

{T}: Add {C}.
Satrapies you control have “{1}{R}, {T}, Discard a card: Draw a card.”

Avaz Sanctuary enters tapped.
Satrapies you control have “{T}: Add {R} or {W}.”

Avaz Temple enters tapped.
Satrapies you control have “{T}: Add {R} or {G}.”

Flying
Harmony — Until the end of your next turn, you may cast target instant or sorcery card from your graveyard. If that card would be put into your graveyard, exile it instead.
When Aven Acoustimancer enters, harmonize. (Trigger up to one harmony of one permanent you control.)

Kicker {U} (You may pay an additional {U} as you cast this spell.)
Flying
If Aven Ranger was kicked, it enters with a +1/+1 counter on it.

Flying
When Aven Strategist enters, return up to one target creature to its owner's hand.

Flying
Civilized — Whenever Aven Supervisor deals combat damage to a player, if you control an artifact, a creature, and an enchantment, you may draw a card. If you do, discard a card.

Flying, vigilance

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever a nontoken creature you control enters, you may pay {1}{W}. If you do, create a 1/1 white Bird creature token with flying.

Trample
Whenever a player casts a noncreature spell, that player sacrifices a noncreature permanent.

This spell costs {2} less to cast if a creature died under your control this turn.
Flying

Whenever you gain life, amass Zombies 1. (Put a +1/+1 counter on an Army you control. It's also a Zombie. If you don't control one, create a 0/0 black Zombie Army creature token first.)
If you would gain life except for the first time each turn, instead each opponent loses 1 life. (If multiple sources would cause you to gain life at the same time, choose one to be first.)

Counter target instant or Aura spell that targets a permanent you control.

Your opponents can't cast spells or activate abilities that aren't mana abilities this turn.

This spell can't be countered.
Survivor spells you cast can't be countered.
Whenever a nontoken Survivor you control enters, create a tapped 1/1 Survivor creature token that's all colors.