The new Therions Regulus does wonders for ABC, it not only gives you a free negate for absolutely nothing but also extends your plays as well. So I tried it out and this is what I came up with for it.
Little ABC trivia!
A assault core, B buster drake, and C crush wyvern all represent the “ABCs” of deck building with monsters, spells, and traps.
A assault core represents monsters, it protects the monster it’s equipped to from monster effects, it also is the color orange to resemble the card border for monsters
B buster drake represents spells, it protects a monster it’s equipped to from spell effects and is green which is the spell card border
C crush wyvern is a trap protector and is mostly purple which is the trap border
I just put that together myself and kicked myself for not noticing a long time ago