Bladewing the Risen | Flameshadow Conjuring | Reckless Barbarian

Cards

Bladewing the Risen in hand or in the command zone.
Reckless Barbarian in your graveyard.
Flameshadow Conjuring on the battlefield.
({3} magic symbol) ({B} magic symbol) ({B} magic symbol) ({R} magic symbol) ({R} magic symbol) plus enough mana to pay for commander tax, if applicable available.

Cast
Bladewing the Risen by paying ({3} magic symbol) ({B} magic symbol) ({B} magic symbol) ({R} magic symbol) ({R} magic symbol) plus commander tax, if applicable.
When
Bladewing the Risen enters the battlefield, it and
Flameshadow Conjuring trigger.
Resolve the
Bladewing the Risen trigger, returning
Reckless Barbarian from your graveyard to the battlefield.
When
Reckless Barbarian enters the battlefield,
Flameshadow Conjuring triggers.
Holding priority, activate
Reckless Barbarian by sacrificing it, adding ({R} magic symbol) ({R} magic symbol) .
Resolve the
Flameshadow Conjuring trigger from step 4, causing you to pay ({R} magic symbol) to create a token copy of
Reckless Barbarian with haste.
Resolve the
Flameshadow Conjuring trigger from step 2, causing you to pay ({R} magic symbol) to create a token copy of
Bladewing the Risen with haste.
Put all but the
Bladewing the Risen token into your graveyard due to the legend rule.
When the token
Bladewing the Risen enters the battlefield, it triggers, returning the nontoken
Bladewing the Risen from your graveyard to the battlefield.
Put the nontoken
Bladewing the Risen into your graveyard due to the legend rule.
Repeat from step 2.