You control a non-Gnome creature that does not have summoning sickness.
Anim Pakal has at least four +1/+1 counters on it.
An opponent cannot block and kill creatures you control.
Steps
Declare any non-Gnome creature you control as an attacker.
Anim Pakal triggers, putting a +1/+1 counter on itself, then creating at least five 1/1 Gnome artifact creature tokens that are tapped and attacking.
Move to your postcombat main phase.
Activate
Phyrexian Altar five times by saacrificing five Gnomes, adding ({R} magic symbol) ({R} magic symbol) ({R} 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.
Results
Infinite colored mana.
Infinite combat phases.
Infinite death triggers.
Infinite ETB.
Infinite LTB.
Infinite sacrifice triggers.
Infinite untap of creatures you control.
Infinite mana creatures you control can produce.
Metadata
In 480 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).