There are four factions available in the crossover Imperials, Necrons, Chaos, and Tyranids and these have been matched to four of the default colours from Magic: The Gathering (white, black, red, and green) with adaptions to suit the tabletop playstyle of the miniatures game
These mechanics can help you shift the power dynamic by either forcing your opponent into challenging a certain character or by giving your character more of an upper hand when they're the one on the attack
Its an instant that brings the creature back at end step, too, meaning it can effectively be used to dodge removal and board wipes
Tinker The best MTG tutor card Tinker does one better than the best tutors
If you're playing with all cards legal (for example, the Vintage format with silver-bordered cards), then Black Lotus and Ancestral Recall are legal choices
It also buffs dwarves, for