When Magic Online was putting together their first ad campaign, they came to R&D to help with some math
If you're looking to just play one of these decks without upgrading, but want to compete at higher levels, Counter Blitz is your best shot
On top of giving near immunity to counters, red and black have a ton of creature and artifact removal effects, and with Shadow giving them split second, you can get around most tricks that other colors can use to protect their permanents
This will then add double strike to all other attacking creatures, potentially turning what your opponent thought was a safe attack into something fatal
The history of each God is as deep as the ocean, and it would be an easy task to provide them with multiple articles all their own if we could
Losing one card from your hand is a small price to pay to stop a spell that would otherwise end the game on the spot