mtg amonkhet split cards Word//Play: Localizing Split-Card Themes into Japanese in Magic the Gathering – Scripting Japan Whenever an opponent casts a spell Rules Update: Split Cards

If I manage to stop their first big attempt, I immediately shift gears, slam my threats, and aim to give them as little time as possible to recover

To get two or three demons out typically isn't enough, especially when your opponents have a turn or two to prepare removal

Since you have the infrastructure to hit already, why not add in two more combat damage triggers that also boost the power by two and thus the Commander Damage clock is sped up as well and giving two key protections from targeted removal like Beast Within and burn like sweeping Blasphemous Act

Either draw a card, make a 3/3, or gains life

Plus, red decks have plenty of ways to give it haste, so you can escape it, drain 3, attack for 6, and drain 3 more to deal 12 damage total

This is such an evergreen creature type that we see them practically nonstop in Standard