Web of Inertia

{2}{U} · Enchantment

At the beginning of combat on each opponent's turn, that player may exile a card from their graveyard. If the player doesn't, creatures they control can't attack you this turn.

Motor: se resuelve a mano

Rulings (1)

Unless some effect explicitly says otherwise, a creature that can’t attack you can still attack a planeswalker you control.
Wizards of the Coast · 2014-02-01