Angrath's MaraudersfinisherBudget$0.18It serves a similar aggressive finisher role by doubling damage you deal, often making combat attacks lethal. While it does not grant double strike, it strongly rewards the same go-wide or big-attacker game plan.
Embercleavecombat_trick$9.48This is one of the closest functional equivalents, giving a creature double strike and helping push damage through in combat. It is cheaper when discounted, but it only affects one attacker at a time rather than your whole board.
Temur Battle Ragecombat_trickBudget$0.26It provides a burst of double strike to help an attacker deal lethal damage in combat, filling a similar role in aggressive red decks. It is much more temporary and combat-focused than the enchantment.
Rage Reflectioncombat$1.65This enchantment is the same general effect at a higher cost: your attacking creatures gain double strike. It is a direct functional cousin, but at six mana it is slower and more expensive.
Fireshriekercombat$0.50Like Berserkers' Onslaught, it enables double strike on a creature, turning any attacker into a major threat. It is colorless and equipment-based, so it is more flexible but only applies to one creature at a time.
Xenagos, God of Revelsfinisher$6.38It fills a similar finisher role by supercharging one attacker every combat, often creating lethal damage in a single swing. The effect is different, but it rewards the same style of big-red aggression.
Duelist's Heritagecombat$0.81This is another combat-oriented card that can grant double strike, often enabling explosive attacks. It is less consistent because it targets only one attacking creature each combat step.
True Convictionfinisher$5.52It is a higher-end combat anthem that gives all your creatures double strike, similar to the way Berserkers' Onslaught turns attacks into lethal threats. White access makes it broader, but it costs more and adds lifelink too.