Sarkhan, Soul Aflame - [Halo Foil, Showcase] March of the Machine: The Aftermath (MAT) VOC Rite of Consumption deals damage

Rite of Consumption deals damage equal to the sacrificed creature's power to target player or planeswalker

you may mill four cards

Akki Hermit deals damage to target attacking creature equal to the number of untapped Mountains you control

return Blood Speaker from your graveyard to your hand

then reveal a card at random from your hand

Sarkhan, Soul Aflame - [Halo Foil, Showcase] March of the Machine: The Aftermath (MAT) VOC Rite of Consumption deals damageDragon spells you cast cost {1} less to cast. Whenever a Dragon enters the battlefield under your control, you may have Sarkhan, Soul Aflame become a copy of it until end of turn, except its name is Sarkhan, Soul Aflame and it's legendary in addition to its other types.