Is Serpent-Blade Assailant legal in Standard, Modern, and Commander?

Serpent-Blade Assailant is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Serpent-Blade Assailant

Q: What type of card is Serpent-Blade Assailant?

Serpent-Blade Assailant is a Creature — Elf Warrior. 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.) Deathtouch"

Creature — Elf Warrior

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.)

Deathtouch

Set March of the Machine

Rarity Common

Mana Value 3

Artist Durion

Collector # 205

Scryfall Gatherer