Tana has power five or greater, does not have summoning sickness and cannot be blocked by an opponent.
Steps
Deal combat damage to an opponent using
Tana.
Tana triggers, creating at least five 1/1 Saproling creature tokens.
Move to your postcombat main phase.
Activate
Thermopod's second ability five times by sacrificing five Saprolings, 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.
Repeat.
If
Tana has power six or greater, this combo nets infinite creature tokens.