Create a 1/1 green Squirrel creature token
Pair it with [[Dawnsire, Sunstar Dreadnought]] and suddenly youve got a one-shot kill
Either way, this is a good ability as it provides information for the card youll draw next, but a good amber deck should have plenty of character cards in it regardless
I also love this with foretell to cast from your exile zone like Alrund's Epiphany
Since then, Stoneforge Mystic has seen play in multiple different archetypes from UW Control as a quick way to close a game, to one of the most aggressive decks of the format, Hammer Time
(2018-10-05) If the creature with mentor leaves the battlefield with mentor on the stack, use its power as that creature last existed on the battlefield to determine whether the target creature has less power