msem-instigator

{U}: Aqueous Treader gets +1/-1 until end of turn.
{U}: Aqueous Treader gets -1/+1 until end of turn.

Other Warriors you control have trample.
{G}: Chratteri Valiant gets +2/+2 and gains trample until end of turn. Activate only once each turn.

Whenever Knight of the Raven deals combat damage to a player, you may sacrifice it. If you do, search your library for a black legendary creature card, reveal it, put it into your hand, then shuffle.

Flying
Whenever you scry, tap target creature you don't control.

Poisonous 5 (Whenever this creature deals combat damage to a player, that player gets five poison counters.)
At the beginning of your upkeep, if an opponent is poisoned, you may destroy target Human.

When Chimera Graft dies, manifest the bottom card of your library. (To manifest a card, put it onto the battlefield face down as a 2/2 creature. Turn it face up any time for its mana cost if it's a creature card.)

Shimmer (Whenever this creature attacks, create a tapped and attacking token that's a copy of it. Exile the token at the beginning of the end step.)
When Colpah Mystic enters, you may discard a card. If you do, creatures you control named Colpah Mystic get +2/+2 until end of turn.

Vigilance
Whenever the final chapter ability of a Saga you control resolves, you may return a non-Saga card at random from your graveyard to your hand.

When Illustrious Lantern enters, put a +1/+1 counter on target creature you control.
{4}, {T}: Put a +1/+1 counter on target creature you control.

When Ink Seer dies, you draw a card, lose 1 life, and create a Treasure token.

Choose one —
• Rip Apart deals 3 damage to target creature or planeswalker.
• Destroy target artifact or enchantment.

Whenever you cast an instant or sorcery spell, put a loyalty counter on Xenocrata and tap up to one target permanent.
[0]: Each opponent can't untap more than three permanents during their next untap step.
[–3]: Xenocrata deals 6 damage divided as you choose among any number of target creatures and/or planeswalkers.
[–9]: Cast any number of instant and/or sorcery cards you own in exile and from your graveyard without paying their mana costs.

{R}, Tap two untapped artifacts you control: Incineration Expert deals 1 damage to any target.
{3}{R}, Tap eight untapped artifacts you control: Incineration Expert deals 8 damage to any target.

When Div of Bonded Souls enters, create a 1/1 colorless Illusion creature token with “This creature is every creature type.”
Whenever a creature you control attacks, it gets +1/+0 until end of turn for each other attacking creature that shares a creature type with it.

Each instant and sorcery card in your graveyard gains agonize until end of turn.
Agonize (You may cast this card from your graveyard by putting a -1/-1 counter on a creature you control in addition to paying its other costs. Then exile this card.)

Equipped creature has vigilance.
Equipped creature gets +3/+3 as long as you control a Spirit.
Equip {1}

Rupture Spire enters tapped.
When Rupture Spire enters, sacrifice it unless you pay {1}.
{T}: Add one mana of any color.

Counter target spell. If a permanent spell is countered this way, create a token that's a copy of that card except it's a colorless creature, it's 2/2, and it's a Plant in addition to its other types.

Choose one or both —
• Put a +1/+1 counter on each creature you control.
• Attacking creatures you control gain lifelink and indestructible until end of turn.

Fiery Erasure deals 3 damage to target creature or planeswalker. If that permanent would die this turn, exile it instead.

Flying
Whenever another creature enters, you gain 1 life.

When Abomination Emissary enters, target player mills six cards.

Sentinel of the Highlands has hexproof as long as it's embattled. (A creature is embattled if it has a counter on it or has a permanent you control attached to it.)

Target creature you control gets +0/+6 until end of turn and can block an additional creature this turn. Untap it.

Defender
{1}{U}: Sea Wall gets +0/+1 until end of turn.
Whenever Sea Wall perseveres, you may return target creature an opponent controls to its owner's hand. (A creature perseveres when it survives damage.)