pokemon 151 booster box bundle Scarlet & Violet 2-Box Lot Pokemon 151 Booster Box (KOR) Pokémon TCG 151 Booster Bundle

Dark Knight's Greatsword Rarity: Uncommon TYPE: Artifact SUBTYPE: Equipment CMC: 3 Mana cost: USD: $0.22 EUR: 0.15 TIX: 0.03 EDHREC RANK: 12118 Job select (When this Equipment enters, create a 1/1 colorless Hero creature token, then attach this to it.) Equipped creature gets +3/+0 and is a Knight in addition to its other types

You can even activate the abilities mid-attack

He is a 4/4 for four mana, and he can sacrifice a creature for one black mana to scry two cards

Learn more: Storm King's Thunder

As mentioned, you might not be able to activate it every turn if you need to cast spells on curve, but either way you should be able to transform it over time