Valhalla: Mechanics

Depth: Cards with a lower depth value than PARAM1 cannot block ~. Used on 1 cards: Merfolk Vanguard

Remnant: When ~ dies, create a 1/1 Soul with Defender and Flying. Used on 1 cards: Lost Traveller

Formation: ~ gains +1/+1 for every allied permanent with Formation, up to a max of +PARAM1/+PARAM1. Used on 2 cards: Fresh Recruit, Battalion Head

Supercharge: Spells that deal damage deal PARAM1 more. Used on 3 cards: Arcana Controller, Experiment 3, Desperate Measures

Taint: When ~ is blocked, the blocking creature gets -PARAM1/-PARAM1 for PARAM2ASWORDS turns. Used on 1 cards: Undercity Boss

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}()]".