Is Ayesha Tanaka legal in Standard, Modern, and Commander?

Ayesha Tanaka is legal in: Legacy, Vintage, Commander.

Ayesha Tanaka

Q: What type of card is Ayesha Tanaka?

Ayesha Tanaka is a Legendary Creature — Human Artificer. Its oracle text reads: "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.)"

Legendary Creature — Human Artificer

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.)<br>: Counter target activated ability from an artifact source unless that ability's controller pays . (Mana abilities can't be targeted.)