Custom Cube!!: Mechanics

psych: To psych PARAM1, look at the top PARAM1 cards of your library. Put one on top of your library, and the rest into your graveyard. Used on 6 cards: Eldritch Harbinger, Intrusive Mania, Xenotic Devourer, Edunesia, Azathoth, Bringer of Madness, Crypt Annelid

Manaleap: Return ~ to your hand: Add PARAM1 to your mana pool. Used on 5 cards: Anger Elemental, Bloodlusted Feline, Vicious Basilisk, Tanglefaith Invoker, Asmodeus, Rage Tyrant

Soulswap: Whenever a creature you control dies and this is in your graveyard, you may pay {r/b}

. If you do, return this creature from your graveyard to the battlefield. It gains haste. Exile it at the beginning of your next end step. Used on 5 cards: Vorkenak, Rage Beyond the Grave, Hellblood Marauder, Grimacing Bat, Splatter Imp, Balor the Irate

Minion: Whenever a permanent you control would be destroyed, you may instead sacrifice this creature. If you do, regenerate that permanent. Used on 6 cards: Aberrant Underling, Militia Knight, Boneguard, Cultured Sycophant, Nameless Expendable, Feverfly

WB archetype mechanic

Aid: Whenever another creature enters the battlefield under your control, you may pay {w/g}

. If you do, put a +1/+1 counter on that creature. Used on 5 cards: Zephyr Maiden, Elven Attendant, Sylvan Mentor, Augmentomancer, Veteran Strategist

Recruit: You may cast this creature for its recruit cost. If you do, put a token copy of it onto the battlefield as it resolves. Used on 11 cards: Recon Scout, Sparring Warriors, Eager Legionnaires, Draconic Soldiers, Hunting Partners, War Dragon, Silent Guardian, Hotblooded Knight, Nameless Expendable, Mitotic Devil, Veteran Strategist

Mutate: PARAM1: Exile this card from your hand mutated onto a creature you control. That creature gains all creature types of this card. When that creature leaves the battlefield, return this card to your hand. Used on 9 cards: Dispulgosaur, Chitin Snapper, Carapace Husk, Scuttlescale, Manafused Bear, Mythic Knight, Owl of Wisdom, Pustule Cultivator, Sparking Automaton

Psych: To psych PARAM1, look at the top PARAM1 cards of your library. Put one on top of your library, and the rest into your graveyard. Used on 3 cards: Excrypt, Skilled Adept, Frenzied Cremation

Feral: This enters the battlefield with PARAM1 +1/+1 counters on it if a creature attacked this turn. Used on 0 cards:

Vector: Damage is dealt to this creature in the form of -1/-1 counters. When this creature dies, you may move its -1/-1 counters to target creature. Used on 0 cards:

Consume: Whenever you cast a spell, exile the top PARAM1 cards of target player's library. You may cast nonland cards exiled this way. Used on 4 cards: Drzkalûg, the Expanding One, Trezixxn, Triumph of the Void, Tepozctacataol, Oblivion Spiral, Drzkalûg's Knight

minion: Whenever a permanent you control would be destroyed, you may instead sacrifice that creature. If you do, regenerate that permanent. Used on 4 cards: Slavery, Tyrannical Overlord, Regal Presence, Serf's Cloak

aid: Whenever another creature enters the battlefield under your control, you may pay {w/g}

. If you do, put a +1/+1 counter on that creature. Used on 1 cards: Helping Hand

.: It deals damage equal to its power to each creature you control, and each creature you control deals damage to it equal to their powers. Used on 1 cards: Lynch

soulswap: Whenever a creature you control dies and a creature card with soulswap is in your graveyard, you may pay {r/b}

. If you do, return that card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of your next end step. Used on 1 cards: Abiku, Bringer of Souls

vector: Damage is dealt to that creature in the form of -1/-1 counters. When that creature dies, you may move its -1/-1 counters to target creature. Used on 0 cards:

*Triumph* - Whenever a creature dealt damage this turn by ~ dies,: Used on 4 cards: Domination Knight, Infectious Arachnid, Pox Hydra, Feverfly

In card text or details pages, write the mechanic's code name (playtest name) between square brackets, like "[Crittercast]", "[Bushido 1]" or "[Delay 4 {2}{R}{R}]". It will be expanded to the mechanic's name plus reminder text, such as "Suspend 4 – {2} {r} {r} . (Rather than cast this spell from your hand,...)"
To expand a mechanic's name but not its reminder text, include parentheses at the end of the square brackets: "[Crittercast()]", "[Delay 9 {R}()]".