Ratadrabik of Urborg | Saw in Half | Ojer Taq, Deepest Foundation // Temple of Civilization (and one other card)

Cards

Cast
Saw in Half by paying ({2} magic symbol) ({B} magic symbol) , destroying
Ojer Taq and creating four token copies of it with base power equal to half the destroyed creature's power and base toughness equal to half the destroyed creature's toughness, rounding up each time.
Put all but one
Ojer Taq token into your graveyard due to the legend rule.
Ratadrabik triggers four times from the nontoken and token
Ojer Taqs dying.
Resolve the first trigger, creating 2*(3^X) nonlegendary token copies of
Ojer Taq that are 2/2 Zombies, where X is the number of
Ojer Taqs you control.
Repeat step 4 for the remaining triggers.

Assuming you control no other token doublers, this combo will make a total of 10^(10^695.6224481408007) creature tokens.

This combo has been estimated to be Exhibition (Bracket 1+).