Battlebox Unlimited: Mechanics

Salvage: As this enters the battlefield, you may exile a card from your graveyard. If the card was white, this enters with a vigilance counter. If it was blue, a flying counter, black a deathtouch counter, red a haste counter, and green a +1/+1 counter. Used on 4 cards: Marauding Hellhound, Adorned Squire, Inspirational Paragon, Traveling Scholar

Salvage is a mechanic that allows creatures to gain different keywords depending on the color of a card exiled from your graveyard during casting.

Minimorph: You may cast this card face down as a 2/2 creature that enters the battlefield with a -1/-1 counter on it for {2}

. Turn it face up and remove up to one -1/-1 counter from it at any time for its minimorph cost. Used on 3 cards: At'chot Sentinel, Stirring Sergeant, Serpentine Battlemaster

Minimorph is better morph.

Siphon: When this enters the battlefield, you may put a -1/-1 counter on a creature you control. Used on 2 cards: Emaciated Scholar, Seventh-Cloud Skyknight

Siphon allows players to use -1/-1 counters as a resource and trade raw stats for future card advantage.

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}()]".