You control at least six creatures that can attack this turn.
An opponent cannot block and kill creatures you control.
Steps
Declare at least six creatures you control as attackers.
Ghalta and Mavren triggers, creating at least six 1/1 Vampire creature tokens.
Move to your postcombat main phase.
Activate Thermopod five times by sacrificing five Vampires, adding ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Activate Aggravated Assault by paying ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) , causing you to untap all creatures you control and to get an additional combat and main phase after this one.