Is Kros, Defense Contractor legal in Standard, Modern, and Commander?

Kros, Defense Contractor is legal in: Legacy, Vintage, Commander.

Kros, Defense Contractor

Q: What type of card is Kros, Defense Contractor?

Kros, Defense Contractor is a Legendary Creature — Cat Advisor. Its oracle text reads: "At the beginning of your upkeep, put a shield counter on target creature an opponent controls. Whenever you put one or more counters on a creature you don't control, tap that creature and goad it. It gains trample until your next turn. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)"

Legendary Creature — Cat Advisor

At the beginning of your upkeep, put a shield counter on target creature an opponent controls.

Whenever you put one or more counters on a creature you don't control, tap that creature and goad it. It gains trample until your next turn. (Until your next turn, that creature attacks each combat if able and attacks a player other than you if able.)

Set New Capenna Commander

Rarity Mythic Rare

Mana Value 4

Artist Katerina Ladon

Collector # 7

Scryfall Gatherer