Bident of Thassa {2}{U}{U}

Legendary Enchantment Artifact

Whenever a creature you control deals combat damage to a player, you may draw a card.

{1}{U}, {T}: Creatures your opponents control attack this turn if able.

Only Kiora would dare steal the weapon of a god. Only Kiora could have succeeded.

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Prints	USD	EUR	TIX
Bloomburrow Commander	$0.51	€0.57	0.24
Modern Horizons 3 Commander	$0.46	€0.75	0.35
The Lost Caverns of Ixalan Commander	$0.46	€0.91	0.12
Starter Commander Decks	$0.82	€0.78	0.66
The Brothers' War Commander	$0.88	€1.03	0.02
Masters 25	$1.74	€1.09	0.02
Commander 2015	$1.46	€0.95
Magic Online Promos			0.03
Theros	$0.75	€0.91	0.02
Theros Promos	✶ $2.06
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The controller of each attacking creature still chooses which player or planeswalker that creature attacks. (2018-03-16)

If a creature can't attack for any reason (such as being tapped or having come under that player's control that turn), then it doesn't attack. If there's a cost associated with having a creature attack, the player isn't forced to pay that cost, so it doesn't have to attack in that case either. (2018-03-16)