If Glint Hawk Idol and another artifact enter under your control at the same time, Glint Hawk Idol's first ability will trigger. You may have it become a creature, but since it will be affected by "summoning sickness," it won't be able to attack that turn.
The creature type "Bird" was inadvertently omitted from each of Glint Hawk Idol's abilities. It has received errata to correct this omission; when either of its abilities resolves, it will become a Bird artifact creature.
For example, say one of Glint Hawk Idol's abilities has resolved and it's a 2/2 creature. You cast Giant Growth targeting it. It's now 5/5. Then Diminish ("Target creature becomes 1/1 until end of turn") is cast targeting it. Once Diminish resolves, Glint Hawk Idol would be 4/4. Activating Glint Hawk Idol's last ability at this point would make it 5/5 again until end of turn.
Last observed on Scryfall 2 months ago at $0.25. Over the trailing 90 days the price moved between $0.05 and $0.25 across 58 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 3 catalogued treatments from MM2 — 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 #216 of *Modern Masters 2015*, the set that shipped alongside the May 2015 Modern Masters 2015 release.
Card type: Artifact, color identity white, printed at common. Commons fill the bulk of a booster pack's volume. Mana cost: {2} (2 converted).
Legal in Modern, Legacy, Vintage, Commander, and Pauper.
EDHrec ranks this card #28,927 in Commander, putting it in the fringe-play tier of the format's playable pool.
Illustrated by Dave Allsop. Rarix catalogs 258 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Dave Allsop
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
If Glint Hawk Idol becomes a creature before you begin a turn with it under your control, it will be affected by "summoning sickness."
If either of Glint Hawk Idol's two abilities resolve while it's a creature, that ability will override any effects that set its power and/or toughness to another number, but effects that modify power and/or toughness without directly setting them will still apply.
