Damned — Whenever this creature attacks, put a +1/+1 counter on it if you've sacrificed a permanent this turn.
When this creature dies, it deals damage equal to its power to each opponent.

Scry 1. Draw a card, then discard a card.
Flashback {U}

Enchant creature
Enchanted creature gets +1/+1 and has vigilance.
Cycling {W/U}

Choose a card name. Target permanent gains protection from the chosen name until end of turn. Scry 2.

Enchant creature
Whenever enchanted creature deals or is dealt damage, exile it.

Enchant creature
Whenever enchanted creature attacks, create a Treasure token.
If enchanted creature would die, instead sacrifice Invest and return that creature to its owner's hand.

Target creature gains indestructible until end of turn. You gain life equal to its toughness.

Whenever you cast an instant or sorcery spell, Ironcliff Blaster gets +1/+1 and gains first strike until end of turn.

Whenever this Subroutine runs, exile up to one other target creature or Subroutine. Return that card to the battlefield under its owner's control at the beginning of the next end step.

{X}{R}: Jorgen gets +X/+0 until end of turn.
When Jorgen leaves the battlefield, he deals damage equal to his power to target opponent or planeswalker.
Wander {1}{R}

Equipped creature gets +1/+0.
Whenever equipped creature deals combat damage to a player, put a stun counter on target permanent they control.
Equip {2}

Whenever you create one or more tokens, put a +1/+1 counter on this creature.

Menace, haste
Whenever you discard one or more cards, you may sacrifice this creature. If you do, return one of the discarded cards from your graveyard to your hand.

Level up {2}{U}
[level 1-2] Whenever a land you control enters, cache the top card of your library face down.
[level 3+] Whenever a land you control enters, draw a card.

Whenever Leonin Hoplite attacks, if you control a legendary creature, it gets +1/+0 and gains first strike until end of turn.

Whenever Leyline Leecher attacks, you may pay {1}. If you do, integrate target card from a graveyard.
Leyline Leecher gets +1/+0 and has flying as long as an instant or sorcery card is integrated onto it.

At the beginning of your end step, you gain 1 life. Then if it's your first turn of the game or you discarded a card named Leystone of Being this turn, create an X/X white Avatar creature token, where X is the difference between your life total and your starting life total.
Cycling {W}

At the beginning of your end step, scry 1. Then if it's your first turn of the game or you discarded a card named Leystone of Depths this turn, draw a card.
Cycling {U}

At the beginning of your end step, untap another permanent. Then if it's your first turn of the game or you discarded a card named Leystone of Growth this turn, put a growth counter on that permanent. It gains “{T}: Add one mana of any type.”
Cycling {G}

At the beginning of your end step, each player mills two cards. Then if it's your first turn of the game or you discarded a card named Leystone of Ruin this turn, target opponent mills four cards.
Cycling {B}

At the beginning of your end step, Leystone of Storms deals 1 damage to each opponent. Then if it's your first turn of the game or you discarded a card named Leystone of Storms this turn, Leystone of Storms deals 1 damage to any target.
Cycling {R}

Kraken, Leviathan, Octopus, and Serpent spells you cast cost {X} less to cast, where X is your devotion to blue.

Before equipped creature would assign, deal, or be dealt damage, sacrifice Lum Berry. If you do, equipped creature gets +1/+1 until end of turn.
When you sacrifice Lum Berry, you may exile equipped creature, then return that card to the battlefield under its owner's control. Put a +1/+1 counter on it.
Equip {1}

Integrate the top two cards of target player's library. They lose 2 life, and you gain 2 life.
Whenever a permanent you control with two or more cards integrated onto it dies, you may pay {B}. If you do, return Lure into Lunacy from your graveyard to your hand.