Stubborn Denial

Instant

Counter target noncreature spell unless its controller pays {1}

. Ferocious — If you control a creature with power 4 or greater, counter that spell instead.

The Temur have no patience for subtlety.

Illustrated by James Ryman · Khans of Tarkir (KTK)

2014-09-20
Some ferocious abilities that appear on instants and sorceries use the word “instead.” These spells have an upgraded effect if you control a creature with power 4 or greater as they resolve. For these, you only get the upgraded effect, not both effects.
2014-09-20
Ferocious abilities of instants and sorceries that don’t use the word “instead” will provide an additional effect if you control a creature with power 4 or greater as they resolve.