If, during your declare attackers step, a creature that must attack if able is tapped, is affected by a spell or ability that says it can't attack, or hasn't been under your control continuously since the turn began (and doesn't have haste), then it doesn't attack. If there's a cost associated with having a creature attack, you're not forced to pay that cost, so it doesn't have to attack in that case either.
The number of attacking Goblins is counted as the last ability resolves, and the bonus is locked in at that time.
Although Goblin Rabblemaster doesn't force itself to attack, if you control two of them, they'll force each other to attack if able.
Last observed on Scryfall 2 months ago at $1.41. Over the trailing 90 days the price moved between $0.02 and $1.89 across 45 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 3 catalogued treatments from M15 — 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 #145 of *Magic 2015*, the set that shipped alongside the July 2014 Magic 2015 release.
Card type: Creature — Goblin Warrior, color identity red, printed at rare. Rares occupy the bottom-of-pack rare slot in standard boosters. Mana cost: {2}{R} (3 converted).
Legal across the major constructed formats — Modern, Legacy, Vintage, and Commander — plus Standard rotation play.
EDHrec ranks this card #4,389 in Commander, putting it in the niche-pick tier of the format's playable pool.
Illustrated by Svetlin Velinov. Rarix catalogs 1,535 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Svetlin Velinov
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
