msem-instigator

{T}: Add {C}.
{3}, {T}: Draw a card. Activate only if a creature died this turn.

Whenever an opponent casts a spell from a graveyard or without paying its mana cost, Piriman Stones deals 5 damage to them.

Enchant player
Whenever one or more creatures attack enchanted player, their controller may sacrifice a creature. If they do, enchanted player loses 3 life, sacrifices a nonland permanent, and discards a card.

Destroy target nonland permanent if its mana value is less than or equal to the number of colors among spells you've cast this turn.

Destroy target creature. Mill two cards.

Target opponent reveals their hand. You choose a creature card from it and exile that card.
Ferocious — If you control a creature with power 4 or greater, instead choose a nonland card from their hand and exile that card.

Enchant creature
Enchanted creature is a Horror with base power and toughness 3/3 and loses all other creature types and abilities.
Whenever enchanted creature deals combat damage to a creature, create a token that's a copy of Plagas Infestation and attach it to the damaged creature.

Align X (Choose modes with total ★ less than or equal to X. You may choose modes multiple times.)
• ★ — Target player reveals their hand and discards a nonland card.
• ★★ — Destroy target creature.
• ★★★★★ — Return each creature card in target player's graveyard to the battlefield under your control.

Equipped creature can't have -1/-1 counters put on it.
Equip {1}

Whenever equipped creature attacks, each player loses 3 life.
Equip {2}

Look at the top three cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Scry 2, then draw two cards.

Planar Alignment enters tapped.
{T}: Add {C}.
{6}, {T}, Exile Planar Alignment: Search your library for a card, put it into your hand, then shuffle.

Your life total becomes 4. Each opponent's life total becomes 2.

Primal—{W}, Exile a creature you control. (During your turn, you may cast this spell by paying {W} and exiling a creature you control instead of playing a land.)
When Planar Eviction enters, exile another target nonland permanent until Planar Eviction leaves the battlefield.

For each pair of basic land types, create a tapped colorless land token of those types. (The basic land types are Plains, Island, Swamp, Mountain, and Forest.)

For each permanent your opponents control, create a token that's a copy of that permanent.

{T}: Add {C}. Put your choice of a flying, first strike, menace, trample, vigilance, or +1/+1 counter on Planar Rift.
{1}, {T}: Remove any number of counters from Planar Rift: Add {C} for each counter removed this way.
{T}: Move a counter from Planar Rift onto target creature you control. Activate only as a sorcery.

You may play cards you own from outside the game.

Whenever equipped creature deals combat damage to a player, draw a card.
Whenever a Vehicle you control becomes a creature, you may attach Planar Uplink to it.
Equip {U}

Aetherize up to two target permanents you control. (To aetherize, create a token that's a copy of it, then exile that token.)

Draw two cards. If three or more colors of mana were spent to cast Planeswalker's Insight, draw three cards instead.

Reveal the top card of your library. You may put a land card revealed this way or a land card from your hand onto the battlefield tapped.

Foretell {1}{B} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
If this spell is foretold, you may cast it as though it had flash.
Target creature gets -3/-3 until end of turn.