Logic: the Processing: Mechanics

Vanguard: This creature must be blocked before creatures without vanguard and must be assigned combat damage before creatures without vanguard. Used on 1 cards: Kara's Martyr

Somewhat of a fixed banding and reverse first strike.
1. Attacking creatures with Vanguard must be blocked before attacking creatures without Vanguard.
2. Creatures with Vanguard must be assigned combat damage before creatures without Vanguard.

Resilience: Prevent all damage dealt to this permanent, and its toughness can't be reduced. Used on 1 cards: Ethereal Corpse

Possibly evergreen to replace regeneration, in parallel to indestructible, but for different color pairs.

Reform: You may cast the back face of this card by paying its reform cost. Used on 3 cards: Formal Drake, Naught, Site

Innovates double faced cards. Can be used for any card type.

Homebound <\1 in \2>: ~ PARAM1 while you control a PARAM2. Used on 1 cards: Kird Ape

A static ability shortform while condition is true.

Somersault: If this card is put into the graveyard from anywhere, transform it. Used on 1 cards: Sword // Offense

Split cards that transform when it hits the grave, revealing another split card that is played from the grave.

Aftermath: Cast this spell only from your graveyard. Then exile it. Used on 2 cards: Shield // Defense, Shield // Defense

Split cards halves that can only be cast from the grave.

({?} can be paid with {1} or by exiling the top two cards of your library.): Used on 2 cards: Metascience, Nonexist

Weird alternative mana cost.

**Climax**: Used on 5 cards: Scene, Battle of Hoth, Phyrexian Invasion, The Brothers' War, Sarpadia

Scenes have a goal for the controller to accomplish in order to gain its rewards.

When the controller accomplishes the climax, gain a climax point for Scenes and two climax points for Planeswalkers.

You win the game when you get 3+ climax points.

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}()]".