Is Redcap Heelslasher legal in Standard, Modern, and Commander?

Redcap Heelslasher is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Redcap Heelslasher

Q: What type of card is Redcap Heelslasher?

Redcap Heelslasher is a Creature — Goblin Rogue. Its oracle text reads: "Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.) First strike"

Creature — Goblin Rogue

Backup 1 (When this creature enters, put a +1/+1 counter on target creature. If that's another creature, it gains the following ability until end of turn.)

First strike

Set March of the Machine

Rarity Common

Mana Value 4

Artist Alexey Kruglov

Collector # 161

Scryfall Gatherer