Whenever Bebop & Rocksteady attack or block, sacrifice a permanent unless you discard a card.
Bebop & Rocksteady is a cheap, aggressive BG beater whose attack/block trigger fuels graveyard and aristocrats synergies: you'll happily discard reanimation targets or sacrifice expendable tokens and treasures every combat. Curve out fast, attack to load the yard, then reanimate fatties or grind value from sacrifices while chipping in commander damage.
Cheap three-mana body that pressures opponents immediately and recasts easily
The attack/block trigger turns combat into free card filtering for reanimator and self-mill payoffs
BG gives access to the best recursion, ramp, and removal in the format
Sacrifice mode pairs beautifully with token, treasure, and aristocrats death-trigger packages
The trigger is mandatory disadvantage every combat—if you have nothing good to pitch or sac you bleed resources
Two-color identity locks you out of blue counters and white protection
Vulnerable to graveyard hate that shuts off the reanimation payoff
Wants a built-up board/yard, so it can stall in pure aggro shells
Each permanent you sacrifice forces opponents to lose creatures too.
Add fast ramp like Sol Ring and dorks plus premium reanimation (Reanimate, Animate Dead, Victimize) so the drawback always cashes into a threat. Build a tight aristocrats core—Pitiless Plunderer, Mayhem Devil, Blood Artist, Grave Pact—so every sacrifice generates value or damage. Round out with graveyard recursion (Eternal Witness, Meren) and efficient interaction to protect your engine against the inevitable graveyard hate.