If an opponent attacks a player or planeswalker but each creature attacking that player or planeswalker is no longer attacking that player or planeswalker by the time Tahngarth's ability resolves (most likely because they've left the battlefield), that player or planeswalker can't be chosen for Tahngarth to attack. If there's no player or planeswalker to choose this way but you still choose to give the opponent control of Tahngarth, Tahngarth isn't attacking.
Any effects that say that Tahngarth can't attack or can't attack a certain player (such as that of Propaganda, or if Tahngarth gains defender) affect only the declaration of attackers. They won't stop Tahngarth from becoming an attacking creature through its triggered ability.
If an opponent is attacking a planeswalker but not that planeswalker's controller, Tahngarth can't attack that player.
Last observed on Scryfall 2 months ago at $0.23. Over the trailing 90 days the price moved between $0.15 and $2.19 across 272 observations. Cross-checked across TCGplayer, eBay sold, Cardmarket EU, and Star City.
This printing is one of 2 catalogued treatments from C19 — the lineup includes 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 #50 of *Commander 2019*, the set that shipped alongside the August 2019 Commander 2019 release.
Card type: Legendary Creature — Minotaur Warrior, color identity green/red, printed at rare. Rares occupy the bottom-of-pack rare slot in standard boosters. Mana cost: {2}{R}{G} (4 converted).
Legal in Legacy, Vintage, and Commander.
EDHrec ranks this card #15,208 in Commander, putting it in the fringe-play tier of the format's playable pool.
Illustrated by Anna Steinbauer. Rarix catalogs 479 other cards credited to this artist.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Anna Steinbauer
Card data via Scryfall. Rarix is fan-made; not endorsed by the rights holders.
Players can't take any actions between the time you choose to give control of Tahngarth to the attacking player and the time it becomes an attacking creature.
Commander damage is tracked for each commander. It doesn't matter who controls the commander as it deals damage. If Tahngarth deals 10 damage to one player while under your control and another 11 damage to that same player while under a third player's control, the player loses the game.
Tahngarth may end up attacking its owner this way.
Although Tahngarth is an attacking creature if it uses its triggered ability, it was never declared as an attacking creature. This means that abilities that trigger whenever a creature attacks won't trigger when it changes control and becomes attacking.
If Tahngarth gains menace, it can't be blocked at all.
Giving control of Tahngarth to an opponent doesn't cause it to become untapped. This means that Tahngarth may end up attacking several times between your turns.
