If you control any Pest creature tokens at that time, the ability won't resolve and none of its effects will happen
If you run one of these commanders, you may need to have a Rule 0 discussion with your pod before you play your deck: Generally, these are commanders that most players don't want to play against at, say, Bracket 2, as Commander Format Panel member, Gavin Verhey puts it
MARCH OF THE MACHINE PRODUCT LINEUP Commander Decks Battle your friends with powerful creatures and spectacular spells from across the Multiverse, in Magics most popular multiplayer format
It has some control elements, Lore removal, and a Location-oriented style but it doesnt focus on a single one meaning you end up with some confused hands that contain pieces of all three
It delivers powerful strikes that can shatter boulders with ease