msem-instigator

Flash
When Predatory Psion enters, switch target creature's power and toughness until end of turn.

Distribute a vigilance, trample, first strike, and lifelink counter among up to four target creatures you control, then distribute four +1/+1 counters among those creatures.

Flying
Whenever Prismatic Scyphozoa attacks or blocks, target player mills three cards.
When Prismatic Scyphozoa dies, create four 1/1 blue Elemental creature tokens with flying.

Return target creature card from your graveyard to your hand.
Augmented — If you've spent {W}{U}{B}{R}{G} to cast spells this turn, return it to the battlefield instead.

When Provincial Loyalty enters, put a vigilance counter on each of up to two target creatures you control.
At the beginning of combat on your turn, permutate. (You may remove a counter from a creature you control. If you do, put two +1/+1 counters on a different creature you control.)

Whenever you cast a noncreature spell, Prowling Frost-Tiger gets +1/+1 and gains hexproof until end of turn.

Pungent Beetle enters with a +1/+1 counter on it for each creature you controlled that died this turn.

{3}, {T}, Sacrifice Punja Stick Trap: Punja Stick Trap deals 2 damage to target creature. Tap it.

{T}: Quill Sniper deals 1 damage to any target if it's an opponent or if you control a storied permanent. (Enchantments and legendary permanents are storied.)

When R-12 Lone Digger enters, it deals 3 damage to target player or planeswalker.

Trample
Cadence (Whenever you cast a spell, if its mana value is greater than this creature's power, put a +1/+1 counter on this creature.)
Whenever Rage-Fueled Adventurer attacks, you may have it fight target creature you don't control.

Whenever an Aura you control becomes attached to a creature, choose one —
• Raiding Gnoll-Band deals 3 damage to that creature.
• That creature gets +3/+0 until end of turn.

Flying, haste
{2}{R}{R}, Exile a multicolored card from your graveyard: Return Rainbow Phoenix from your graveyard to the battlefield tapped. If it's your declare attackers step, it enters attacking.

I — Search your library for a basic land card, reveal it, put it into your hand, then shuffle.
II — You may put a land card from your hand onto the battlefield.
III — Lands you control gain “{T}: Add one mana of any color” until end of turn.

Enchant creature you control
When Rapacious Instinct enters, enchanted creature deals damage equal to its power to target creature you don't control.
Enchanted creature gets +1/+0.

When Ravenous Abomination enters, choose one —
• Create two Treasure tokens.
• Put a +1/+1 counter on Ravenous Abomination.

Double strike

Whenever a Plains you control enters, you may put a creature card with mana value 2 or less from your hand onto the battlefield.

Converge — Exile up to X nonland permanents you control, where X is the number of colors of mana spent to cast Reenter Orbit, then return them to the battlefield under your control.

Sacrifice Repurposed Killdrone: It deals 1 damage to any target. You gain 1 life.

{W}, {T}: Tap target creature.

Flash
Whenever you cast a Tale, look at the top two cards of your library. Put one into your hand and the other back on top or into your graveyard.

Destroy target artifact or enchantment. If you controlled that artifact or enchantment, draw two cards.

At the beginning of your upkeep, if a library has twenty or fewer cards left in it, return Returned Explorer from your graveyard to the battlefield tapped.

Saga spells you cast cost {1} less to cast.