msem-instigator

Prismatic — Whenever you cast a multicolored spell, you may pay {1}. If you do, exile target nonland permanent, then return it to the battlefield tapped under its owner's control.

Until end of turn, target creature gets +2/+2, then an additional +2/+2 for each card and token merged with it.

Target creature you control gets +2/+2 until end of turn if it's an Insect. Then it fights up to one target creature.

{2}{U}, {T}: Reveal the top two cards of your library. Put all land cards revealed this way onto the battlefield and the rest into your graveyard.

Primal {2}{U}{U} (During your turn, you may cast this spell for {2}{U}{U} instead of playing a land.)
Whenever Tangleveil Mystic deals combat damage to a player, draw cards equal to the number of cards in your hand.

Flash
Reach
Experience (Whenever this creature attacks, if it has fewer than three +1/+1 counters on it, put a +1/+1 counter on it.)

{1}, {T}: Tap target nonartifact creature.

When Tantalizing Glutton enters, create a green Aura Curse enchantment token named Just Out of Reach attached to target player. The token has enchant player and “At the beginning of each of enchanted player's opponents' upkeeps, if that player doesn't control a Food, they create a Food token.”

Archive 3 (As this enters, shuffle the top three cards of your main library into a new face up library. Sacrifice this after the archived library is empty.)
Whenever a source you control deals noncombat damage to a player, draw a card from the archived library.

[+2]: Create a 2/2 red Werewolf creature token with first strike and haste.
[–3]: Tanya deals 3 damage to each creature that's not a Wolf or a Werewolf.
[–8]: For each permanent your opponents control, that player sacrifices it unless they have Tanya deal 2 damage to them.

Deathtouch
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.)
Whenever an opponent has less life or fewer cards in their main library than the number of Curses attached to them, they lose the game.

[+1]: Tanya, the Mooncursed becomes a legendary 3/1 red Werewolf creature with first strike until end of turn.
[–2]: Tanya, the Mooncursed deals 3 damage to target creature or planeswalker.
[–4]: Destroy target nonbasic colorless permanent.

Each creature you control has every creature type among other creatures you control in addition to their own.
Creatures you control get +1/+1 for each of their creature types.

Enchant opponent
Whenever enchanted player is attacked, you may discard a card. If you do, draw a card.

Choose three. You may choose the same mode more than once.
• Tap target nonland permanent. It doesn't untap during its controller's next untap step.
• Exile target creature you control, then return it to the battlefield under your control.
• Target creature gets +1/+0 and gains lifelink and first strike until end of turn.

Choose one or both —
• You gain 5 life.
• Each player draws three cards.

Whenever you draw a card, put a loyalty counter on Tara, Duneblessed.
[–1]: Create a 1/1 white Soldier creature token. Investigate.
[–2]: If target artifact or creature is tapped, exile it. Otherwise, tap it and put a stun counter on it.
[–10]: Choose up to one creature. Destroy the rest.

[+2]: Up to one target creature gets -1/-1 until your next turn. Tap it. You may remove all counters from it.
[–2]: Destroy target creature with no counters on it.
[–10]: Each opponent's life total becomes equal to the number of creatures they control.

This spell costs {2} more to cast for each target beyond the first.
Choose one or more —
• Exile target enchantment.
• Target player creates two tapped 1/1 white Soldier creature tokens.
• Taranika's Endeavor deals damage equal to the number of creatures you control to target creature or planeswalker.

Tarmovore's power and toughness are each equal to twice the number of card types among cards in all graveyards.

Indestructible
If Tarraka-no-Oni would be put into a graveyard from anywhere, reveal Tarraka-no-Oni and shuffle it into its owner's library instead.

Hexproof

Draw three cards, then discard a card unless you exile two cards from your graveyard.

Discard your hand. Draw a card for each artifact you control, then add {U} for each artifact you control. Exile Taste Brilliance.

Enchant creature
Whenever enchanted creature deals combat damage to a player, draw a card.