Web of Inertia
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.
Legalities
- brawl: banned
- commander: legal
- legacy: legal
- modern: legal
- pauper: legal
- pioneer: banned
- standard: banned
- vintage: legal
Rulings
- 2014-02-01:
Unless some effect explicitly says otherwise, a creature that can’t attack you can still attack a planeswalker you control.