Desdemona, Mistress of Shadows

Reach
{2}Silvery Barbs

Roll a d20:

1 - 12 | Counter target instant, sorcery, activated ability, or triggered ability unless opponent pays {1}

13 - 18 | Counter target instant, sorcery, activated ability, or triggered ability unless opponent pays {2}

19 - 20 | Counter target instant, sorcery, activated ability, or triggered ability.