Belligerent Brontodon

Oracle Text

Each creature you control assigns combat damage equal to its toughness rather than its power.

Card Rulings

9/29/2017 Belligerent Brontodon’s ability doesn’t actually change any creature’s power. It changes only the amount of combat damage it assigns. All other rules and effects that check power or toughness use the real values. For example, Hunt the Weak won’t cause a creature to fight with its toughness.