Is Zask, Skittering Swarmlord legal in Standard, Modern, and Commander?

Zask, Skittering Swarmlord is legal in: Legacy, Vintage, Commander.

Zask, Skittering Swarmlord

Q: What type of card is Zask, Skittering Swarmlord?

Zask, Skittering Swarmlord is a Legendary Creature — Insect. Its oracle text reads: "You may play lands and cast Insect spells from your graveyard. Whenever another Insect you control dies, put it on the bottom of its owner's library, then mill two cards. (Put the top two cards of your library into your graveyard.) {1}{B/G}: Target Insect gets +1/+0 and gains deathtouch until end of turn. ({B/G} can be paid with either {B} or {G}.) Power/Toughness: 5/5"

Legendary Creature — Insect

You may play lands and cast Insect spells from your graveyard.

Whenever another Insect you control dies, put it on the bottom of its owner's library, then mill two cards. (Put the top two cards of your library into your graveyard.)

: Target Insect gets +1/+0 and gains deathtouch until end of turn. ( can be paid with either or .)