Skirk Prospectorramp$0.37Provides the same sacrifice-for-mana role, turning a creature into red mana for explosive starts or combo turns. It is one of the cleanest functional parallels despite being a Goblin instead of a Dragon.
Priest of Urabraskramp$3.59When it enters, it effectively refunds red mana and can help chain into additional spells, similar to a temporary ritual effect. It is not a sacrifice outlet, but it serves a comparable burst-mana purpose in red.
Brightstone Ritualramp$2.35A red burst-mana spell that can produce a large amount of red mana in the right deck, echoing the explosive mana burst role. It is spell-based rather than creature-based, but fills the same acceleration niche.
Seething Songramp$10.59A classic red ritual that turns one card into a significant temporary mana boost, similar to sacrificing Reckless Barbarian for extra red mana. It is one of the strongest direct mana-burst analogs.
Desperate Ritualramp$3.91Provides efficient red ritual mana for combo turns, matching the short-term acceleration role of Reckless Barbarian. It is lower output, but much more efficient.
Pyretic Ritualramp$8.60Another cheap red ritual that converts a small investment into immediate red mana, serving the same general function of speeding out plays. It is a budget-friendly alternative with similar usage patterns.
Culling the Weakramp$19.62A sacrifice-to-mana effect that can generate a huge burst, analogous to turning a creature into mana. It is black rather than red, but is one of the closest functional cousins to the Barbarian's sacrifice ability.
Sacrificeramp$10.19A direct creature-sacrifice ritual that converts a creature into a burst of mana, closely paralleling Reckless Barbarian's core function. It is older and less efficient, but extremely on-theme functionally.