msem-instigator

Whenever Fated Mariner attacks, forebode. (Create a tapped colorless Omen artifact token with “{T}, Discard a card, Sacrifice this artifact: Draw a card.”)
{1}{U}: Fated Mariner can't be blocked this turn.

When Faulty Lock enters or is put into a graveyard from the battlefield, choose a creature you control. Whenever that creature deals combat damage to a player this turn, draw a card.
{2}{U}: Sacrifice Faulty Lock. Activate only as a sorcery.

Whenever you cast a spell that doesn't share a color with Feathered Warden, you may gain 1 life.

Put a +1/+1 counter on target creature, then you gain 1 life for each +1/+1 counter among creatures you control.

Whenever an attacking creature dies, you may pay {R}. If you do, create a 2/1 red Merfolk creature token.

Wanderlust — Feral Ornithax gets +2/+2 and has trample as long as you control four or more differently named lands.

Ferocious Flame deals 2 damage to any target. If you control a creature with power 4 or greater, it deals 4 damage instead.

Target creature gets +1/+0 and gains first strike and haste until end of turn.

Choose one —
• Festival Sabotage deals 2 damage to any target.
• Audition for red. (Create a 1/1 Construct Actor creature token, a Warrior Role giving 3/2 and trample, or a Wizard Role giving 2/2 and prowess. Roles replace older ones.)

Choose one —
• Target attacking creature gets +2/+2 until end of turn.
• Destroy target artifact.

{B}: Fetid Nibbler gains deathtouch until end of turn.

Whenever another nontoken creature you control dies, create a 1/1 black Rat creature token with “This creature can't block” if this is the first time this ability has resolved this turn. Otherwise, Ffion, Famine Warcaller deals 1 damage to each player.

When Fidelity of the Pure dies, create a 1/1 green and white Elk Spirit creature token.
Revive {2}{W} ({2}{W}, Exile this card from your graveyard: Create a token that's a copy of it except it has no mana cost. Revive only as a sorcery.)

Haste

Target creature you control gets +2/+2 and gains trample until end of turn.
Ferocious — You may cast Fierce Howl as though it had flash if you control a creature with power 4 or greater.

Target creature gets +2/+2 and gains trample until end of turn.

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

Put a +1/+1 counter on target creature. It gains indestructible until end of turn.

Target opponent mills four cards. Scry 2.

As an additional cost to cast this spell, sacrifice a creature.
Exile target creature.

As an additional cost to cast this spell, sacrifice a permanent.
Exile the top two cards of your library. Until the end of your next turn, you may play those cards.

Enchant artifact
Enchanted artifact is an Equipment and has “Equipped creature gets +2/+0” and equip {0}.

Finish Off deals 2 damage to any target. If you've drawn two or more cards this turn, it deals 3 damage instead.
Cycling {3} ({3}, Discard this card: Draw a card.)

Destroy target creature if it was dealt damage this turn.

{R}, Sacrifice Firebelly Toad: It deals 3 damage to target player or planeswalker.