Kediss, Emberclaw Familiarutility$5.86Not the same effect, but it pushes the same aggressive combat plan by spreading commander combat damage to everyone. It fits red pressure decks that want to end games through combat damage.
Aggravated Assaultfinisher$24.78A red combat-focused finisher that turns big attack steps into repeated combat phases. Like Avatar of Slaughter, it rewards going wide or making one huge attacker lethal quickly.
Nahiri's Machinationsutility$0.20Gives your team a combat-oriented advantage and can help force through damage while defending you. It is a cheaper red card that supports the same attack-heavy game plan.
Insurrectionfinisher$10.84A high-impact red finisher that often ends the game by turning all opposing creatures into your attackers. It shares the same 'combat ends the game now' feel as Avatar of Slaughter.
Shared Animosityfinisher$1.47A tribal combat payoff that dramatically increases damage output during attacks. While it doesn't grant double strike, it serves a similar role as a red creature-ending combat enhancer.
Fervorutility$4.30Not a combat-doubling effect, but it supports the same aggressive plan by giving your creatures haste so they can attack immediately. It is a classic red enabler for lethal combat turns.
Impact Tremorsutility$12.42A red pressure card that converts creature deployment into damage, complementing the same all-in offense plan. It helps decks that want to overwhelm opponents with repeated combat pressure.
Hellriderfinisher$2.98A fast red finisher that rewards attacking with extra damage from each attacker. It occupies a similar slot as a high-impact creature that makes combat much more dangerous.