You can also cast this frightfully early in a Belbe deck, so theres that
Convoke creatures like Impervious Greatworm can make use of cards like Contest of Claws to deal 16 damage and cast a 16/16 creature while only spending two mana the whole turn
Incineroar ex's attack normally costs five energy, which makes it absurdly difficult to set up, but its ability mitigates against this drawback if the opponent sets up their bench completely
Suddenly, your creatures gain invulnerability to targeted removal, death via damage, and blockers
Besides this it seems great though.
When it dies, you may put its +1/+1 counters on target artifact creature.) Whenever another artifact enters the battlefield under your control, target creature an opponent controls gets -1/-1 until end of turn