Living Hive does not have summoning sickness and cannot be blocked by an opponent.
Steps
Deal combat damage to an opponent using Living Hive.
Living Hive triggers, creating six 1/1 Insect creature tokens.
Move to your postcombat main phase.
Activate Phyrexian Altar at least five times by sacrificing at least five Insects, adding at least ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Activate Aggravated Assault by paying ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) , untapping all creatures you control and causing you to get an additional combat and main phase after this one.