msem-instigator

Cast this spell only during your turn.
Counter target spell.

At the beginning of each opponent's end step, that player loses 1 life for each creature they control unless they sacrifice a creature. Then they lose 1 life for each card in their hand unless they discard a card.

Flash
If a spell or ability an opponent controls would cause you to discard a creature card, you may put that card onto the battlefield instead.

Whenever Wakeborne Kraken or another Kraken, Leviathan, Octopus, or Serpent you control enters, you may return target creature an opponent controls to its owner's hand.
Whenever a creature an opponent controls leaves the battlefield, if it didn't die, draw a card.

You don't lose unspent mana as steps and phases end except at end of turn.
Hand of the Chroma gets +1/+1 for each color of unspent mana you have.

You may choose not to untap Master of Minds during your untap step.
{T}: Gain control of target creature with mana value X or less for as long as Master of Minds remains tapped, where X is the number of Islands you control.

Choose target player. Until end of turn, if a spell or ability that player controls would cause them to draw a card, each of their opponents draws a card instead.

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards. Create a tapped Treasure token.

Whenever Lha Maria blocks a creature, change Lha Maria's base power and toughness to that creature's power and toughness

Distorted (This creature can be blocked by tapped creatures but not untapped creatures.)
Spells you cast from zones other than your hand cost {3} less to cast.

When Endless Trove enters, if it's not a token, each opponent may create a token that's a copy of it.
{T}: Add one mana of any color.

{T}: Add one mana of any color.
{2}{G}: Provincial Herbalist gains deathtouch until end of turn.

Whenever a spell or ability with one or more targets is put onto the stack, reselect its targets at random.

Lifelink
Menagerie — When Leafdown Glimmerfox enters, if there are five or more creature types among creatures you control, exile another target nonland permanent until its controller's next end step.

{2}, Sacrifice Bottled Fate: Put the top card and bottom card of your library into your hand.

Rippling Core enters tapped.
{T}: Add {R} or {W}.
{R}{W}, {T}, Sacrifice Rippling Core: Conjure a card named Data-Point into your hand. (It's a sorcery that costs {2} with “Draw a card.”)

[+1]: The next card you foretell this turn costs {0} to foretell. You may discard a card. If you do, draw a card.
[–3]: Teufel deals 4 damage to any target and you gain 4 life.
[–6]: You get an emblem with “Whenever you cast a spell, you may pay life equal to the amount of mana spent to cast it. If you do, copy that spell and you may choose new targets for the copy.”

Counter target spell. Its controller draws a card.

Hollow Queen can't be blocked by tokens.
Whenever Hollow Queen deals combat damage to a player or planeswalker, you may remove a counter from a permanent you control. If you do, put a +1/+1 counter on target creature you control.

Destroy target enchantment or Zombie.
Cycling {W} ({W}, Discard this card: Draw a card.)

Siphon (Each -1/-1 counter you put on your creatures up to their remaining toughness while casting this pays for {1}.)
Gamhaugen Burns deals 3 damage to any target.

At the beginning of your upkeep, choose two different basic land types. Create a colorless land token that's the chosen types.
At the beginning of your end step, sacrifice a land.

When Scanning Module enters, crystallize. (Put a +1/+1 counter on a creature you control or create a Treasure.)
Equipped creature gets +1/+1.
Equip {1}

When Ravenous Chupacabra enters, destroy target creature an opponent controls.