Ayesha Tanaka (CHR 73)

Legendary Creature — Human Artificer • Mana cost: {W}{W}{U}{U} • Chronicles • Rare

Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.)
{T}: Counter target activated ability from an artifact source unless that ability's controller pays {W}. (Mana abilities can't be targeted.)

Illustrated by Bryon Wackwitz.