Whenever you cast a multicolored spell, this creature deals 1 damage to each opponent and you gain 1 life.
When this creature dies, create a Treasure token.

When this creature enters, you may pay X life. When you do, return X target cards you discarded this turn from your graveyard to your hand.
Whenever you discard a card, each opponent loses 1 life.

When this creature enters, create a 2/2 white Samurai creature token with exalted.
Cycling {2}

Exalted
When this creature enters, each player sacrifices a creature or planeswalker of their choice.

Menace
Swampcycling {2}

Exalted
Whenever a creature you control attacks alone, you may reveal the top card of your library, then put it into your hand. If you do, each player loses life equal to that card's mana value.

Whenever a nontoken creature you control dies, you draw a card and you lose 1 life.
{2}{B}, Sacrifice this creature: Create an X/X black Demon creature token, where X is the number of creatures you controlled that died this turn. Activate only as a sorcery.

Lifelink
Whenever you pay life, draw seven cards.

Target creature gets -2/-2 until end of turn.

{B}, Sacrifice a creature: This creature deals 1 damage to each opponent and you gain 1 life.

Time loop
I — Pay any amount of life. Create an X/X black Demon creature token, where X is the amount of life paid.
II — You draw a card and you lose 1 life.
III — Target creature you control gains lifelink until end of turn.

Trample
Damned — Whenever this creature enters or attacks, if you've sacrificed a permanent this turn, this creature deals 3 damage to any target and you gain 3 life.

Whenever a creature you control attacks alone, you may pay {1}{B}. If you do, return this card from your graveyard to the battlefield tapped and attacking.

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Damned — Destroy target creature if it has mana value 3 or less or if you've sacrificed a permanent this turn.

Damn to Hell deals X damage divided as you choose among any number of target creatures and/or planeswalkers and you gain X life, where X is the number of Swamps you control plus the number of cards with a cycling ability in your graveyard.
Swampcycling {2}

Whenever an opponent loses life for the first time each turn, they lose 3 life.
Whenever an opponent discards a card for the first time each turn, they discard a card.
Whenever an opponent sacrifices a permanent for the first time each turn, they sacrifice a nonland permanent.

Lifelink
{1}{B}, {T}, Sacrifice a creature: Target opponent discards a card. Activate only as a sorcery.
{2}{B}, {T}, Exile a creature card from your graveyard: You draw a card and you lose 1 life. Activate only as a sorcery.

Whenever you attack, up to one target creature you control can't be blocked this turn. Return that creature to its owner's hand at end of combat.

Flying
When this creature enters, if a nontoken creature you controlled left the battlefield without dying this turn, draw a card.
Cycling {2}

Target creature you control has base power and toughness 4/4 until end of turn.

Flying
Whenever this creature becomes tapped, surveil 1. If it isn't attacking, surveil 2 instead.

Ninjutsu {1}{U}
Whenever this creature deals combat damage to a player, you may have it become a copy of another target creature, except it's a Ninja in addition to its other types.

Ninjutsu {1}{U}
If you would draw a card except the first one you draw in each of your draw steps, draw two cards instead.

When this creature enters, tap up to one target creature.
Flow — {3}{U}: Tap target creature.