8 mana is rough, but this is a cast trigger, not ETB, so it cannot be traditionally countered with Counterspell and friends
Breath Weapon Choose Your Weapon Concealed Weapon Deathleaper, Terror Weapon Diamond Weapon Dwalin, Weaponmaster Dwarven Weaponsmith Efreet Weaponmaster Foam Weapon Kiosk Godo, Bandit Warlord Improvised Weaponry Iron Fist, Living Weapon Legacy Weapon Pact Weapon Renowned Weaponsmith Scavenged Weaponry Seasoned Weaponsmith (playtest) Tawnos's Weaponry The Immortal Weapons Thran Weaponry Toggo, Goblin Weaponsmith Ultima Weapon Viashino Weaponsmith Weapon Rack Weapon Surge Weaponcraft Enthusiast Weaponize the Monsters Weaponized Scrap (playtest) Weapons Manufacturing Weapons Trainer Weapons Vendor World Champion, Celestial Weapon X-23, Deadly Weapon

You should not expect to see this in any other formats, and its something the PFP [Pauper Format Panel] is specifically interested in and thinks Pauper can handle given the accessibility of building decks and the predominance of online play, PFP member and Magic principle game designer Gavin Verhey said in the accompanying blog post explaining the decision
Whether or not those sets will have precons is currently unknown, but we can hope
Task Search Checklists Fallout Commander Decks The Fallout (set code PIP) Universes Beyond cards were spearheaded by a collection of four different preconstructed Commander decks
Its ampersand promo is also the most sought-after