A creature that didn't have first strike in the first combat damage step gains it after damage has been dealt while still in that step
You can focus on Zombie tribal, but that is more of a white-black thing as those are the two colors that naturally have Zombies (the other colors have embalm creatures that can become Zombies)
Another Adventures in the Forgotten Realms favorite, Prosper, Tome-Bound, gets Shadows Over Baldurs Gate. This bright comic book-esque Lair includes Wild-Magic Sorcerer, a card that perfectly synergizes with Prospers ability to exile spells for casting later
It was $15-$20 for a while, sure, but that really speaks to just how overpriced all these cards are at release, doesnt it
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Have you made Counter-Burn work in Commander