Is Ingenious Leonin legal in Standard, Modern, and Commander?

Ingenious Leonin is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Ingenious Leonin

Q: What type of card is Ingenious Leonin?

Ingenious Leonin is a Creature — Cat Soldier. Its oracle text reads: "{3}{W}: Put a +1/+1 counter on another target attacking creature you control. If that creature is a Cat, it gains first strike until end of turn. (It deals combat damage before creatures without first strike.)"

Creature — Cat Soldier

: Put a +1/+1 counter on another target attacking creature you control. If that creature is a Cat, it gains first strike until end of turn. (It deals combat damage before creatures without first strike.)