If the target creature's power is no longer less than the attacking creature's power as the ability resolves, mentor doesn't add a +1/+1 counter. For example, if two 3/3 creatures with mentor attack and both mentor triggers target the same 2/2 creature, the first to resolve puts a +1/+1 counter on it and the second does nothing.
Mentor compares the power of the creature with mentor with that of the target creature at two different times: once as the triggered ability is put onto the stack, and once as the triggered ability resolves. If you wish to raise a creature's power so its mentor ability can target a bigger creature, the last chance you have to do so is during the beginning of combat step.
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.
Last observed on Scryfall 2 months ago at $0.51. Over the trailing 90 days the price moved between $0.02 and $0.53 across 49 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 3 catalogued treatments from GRN — the lineup includes Foil and Nonfoil alongside the standard finish. Across our catalog the Rarix library tracks every variant in the same family so collectors can compare price, scarcity and demand inside a single lineage.
Card #19 of *Guilds of Ravnica*, the set that shipped alongside the October 2018 Guilds of Ravnica release.
Card type: Creature — Angel, color identity white, printed at rare. Rares occupy the bottom-of-pack rare slot in standard boosters. Mana cost: {4}{W}{W} (6 converted). Keyword abilities: Flying and Mentor.
Legal across the major constructed formats — Modern, Legacy, Vintage, and Commander — plus Standard rotation play.
EDHrec ranks this card #16,368 in Commander, putting it in the fringe-play tier of the format's playable pool.
Illustrated by Alex Konstad. Rarix catalogs 186 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Alex Konstad
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
If another white creature you control is dealt lethal damage at the same time as Light of the Legion, they're destroyed at the same time. That creature won't receive a counter from Light of the Legion's ability in time to save it.
