msem-instigator

Choose two —
• Target player creates two 1/1 white Soldier creature tokens.
• Exile target attacking creature.
• Creatures target player controls gain indestructible until end of turn.
• Put a +1/+1 counter on target creature and untap it.

Deathtouch
{U/B}: Change a target of target spell or ability that targets Serafina to another creature you control.
Whenever Serafina deals damage to a player, at the beginning of the next end step, that player loses life equal to the life they lost this turn.

Reach
When Falkenrath Fletcher enters, if an opponent lost life this turn, create a 1/1 black and red Vampire creature token with menace.

Whenever you draw a card, you may exile the top card of your library.
{3}{U}{U}, Sacrifice Collector of Memories: Shuffle your hand into your library, then put each card exiled with Collector of Memories into its owner's hand.

({T}: Add {G}, {U}, or {R}.)
Pristine Dominion enters tapped.

Create a 1/1 blue Bird creature token with flying, then put the bottom card of your library into your hand.

Create two 1/1 white Human creature tokens.

When Njel Crocodile enters, you may have it fight target creature. (Each deals damage equal to its power to the other.)

Whenever Starlight Emissary harnesses a spell, draw a card.

As an additional cost to cast this spell, exile two cards from your graveyard with the same mana value.
Search your library for a card with the same mana value as the exiled cards, reveal it, put it into your hand, then shuffle.

Target creature you control becomes a white Bear with base power and toughness 3/5, hexproof, and double strike until end of turn. Whenever it deals combat damage to a player this turn, draw a card.

Whenever you cast an instant or sorcery spell, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)

Trample
Whenever Saghira, Divinity's Usurper attacks, you may pay {1}{G}. If you do, destroy target artifact, enchantment, or creature with flying.

Trample
Whenever Cacophonous Demon deals combat damage to a player or planeswalker, you may exile target artifact or enchantment.
Whenever a creature deals damage to you, tap that creature. It becomes an enchantment in addition to its other types.

When Rampaging Xiangshe enters, create an Idol token. (It's an artifact with “{1}, Sacrifice this artifact: Put a +1/+1 counter on target creature. Activate only as a sorcery.”)
Each creature you control with a +1/+1 counter on it has trample.

Deathtouch
When Ghastly Scorpion dies, you draw a card and you lose 1 life.

Recruit. (Create a 0/0 white Soldier Army creature token, then put a +1/+1 counter on each Army you control.)
Armies you control gain trample until end of turn.

When Cryptic Waypoint enters, create a 1/1 blue Scout creature token.
{T}: Add {G}, {U}, or {R}.

Counter target spell unless its controller pays {2} for each Wizard on the battlefield.

Surveil 2, then you draw a card and you lose 1 life. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)
{2}{B}, Exile Corrupted Knowledge from your graveyard: Each opponent loses 2 life and you gain 2 life.

Prowess
Whenever Steamwalker attacks, you may discard a card. If you do, draw a card, then catalyze. (The next spell you cast this turn costs {1} less to cast.)

Mill three cards, then you may return a creature or land card from your graveyard to your hand.

If a permanent would deal damage to Elusive Fatecrafter, instead prevent that damage and exchange control of Elusive Fatecrafter and that permanent.

Flying
When Sage of Storms enters, untap another target creature you control with flying and put a +1/+1 counter on it.