4 cards where the card types include “creature” and the power > 15

Yargle and Multani (March of the Machine #256)
Impervious Greatwurm (Double Masters 2022 #152)
Infinity Elemental (Unsanctioned #54)
B.F.M. (Big Furry Monster) (Unglued #29)

It is the moment of discovery, the triumph of the mind, and the end of these results.