msem-instigator

When Tempting Shahmaran enters, gain control of target creature. Untap it and it gains haste. At the beginning of the next end step, exile that creature and put X +1/+1 counters on Tempting Shahmaran, where X is that creature's power.
Tempting Shahmaran has all activated abilities of cards exiled with it.

As Evil One's Mind Tricks enters choose Lafterii or Evil One.
• Lafterii — Wizards you control have “{3}{U}, {T}: Draw a card.”
• Evil One — Whenever a Zombie you control enters, target player mills two cards.

Flying
Whenever another creature you control enters, you may search your library for an instant or sorcery card with the same mana value as that creature, reveal it, put it into your hand, then shuffle.

Inspired — Whenever Yenzu Disciple becomes untapped, each opponent loses 1 life and you gain 1 life.

Target opponent sacrifices half the permanents they control, rounded down.

Exile any number of target creatures you control. At the beginning of the next end step, return to the battlefield tapped each creature card exiled this way and each creature card put into your graveyard from the battlefield this turn.

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

Create three 0/0 colorless Reflection creature tokens. Creature tokens you control get +2/+2 until end of turn.

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

Flying, prowess
Whenever one or more creatures attack, you gain life equal to the greatest power among those creatures.
Whenever you cast a white spell, you may have Heraldry become an Angel creature in addition to its other types or stop being a creature.

Enchant player
When Curse of the Unburied enters, return up to two target creature cards from your graveyard to your hand.
Whenever a land enchanted player controls enters, they lose 1 life.

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards.

Slipstream (This creature can't be blocked as long as only creatures with slipstream are attacking.)
When Dancer of the Great Current enters, tap up to one target creature. If you control two or more other creatures that are Merfolk, Wizards, or Rogues, instead return that creature to its owner's hand and put a +1/+1 counter on Dancer of the Great Current.

Golden age (If you cast an instant or sorcery spell, activated a nonmana ability, and attacked this turn, enter a renaissance for this game.)
{3}{G}: Da'Lang gets +2/+2 until end of turn. If you're in a renaissance, all creatures able to block Da'Lang this turn do so. Activate only once each turn.

Eternal Oak gets +1/+1 for each creature you control.
Whenever a nontoken creature you control dies, create a 1/1 green Saproling creature token.

As long as you control exactly one creature, no more than one creature can attack or block each combat.

You may cast this spell without paying its mana cost if it targets a spell you control.
You may choose new targets for target spell.

Flash
Flying
When Powder Scatterer enters, exile target noncreature spell. Its controller draws a card.

Survivors you control get +3/+3.

Flash
When Cranial Glass enters, exile target card from a graveyard.
{7}, {T}, Sacrifice Cranial Glass: Copy the exiled card. You may cast the copy without paying its mana cost. (A copy of a permanent spell becomes a token.)

{T}: Add {C}.
{1}, {T}: Add one mana of any color. When this mana is spent to cast a spell that shares a color with a legendary creature you control, scry 1.

As long as Jadycian Empath is on the battlefield or in your graveyard, it's a land in addition to its other types.
Sacrifice Jadycian Empath: Add one mana of any color.

Windworn Spires enters tapped.
{T}: Add {R}.
Desertcycling {1}{R} ({1}{R}, Discard this card: Search your library for a Desert card, reveal it, and put it into your hand, then shuffle.)

Whenever Ferris, the Sapphire Storm or another creature you control enters, each opponent mills X cards, where X is that creature's power.

Breach (Whenever this deals combat damage to a player, you may have it become an Aura Curse until your next turn. Attach it to that player.)
At the beginning of your end step, each cursed opponent loses 2 life unless they discard a card.