Snorlaxs Gormandize ability is essential to set up our board because it can help us setup multiple Durant on the bench while walling with a single Prize Card Pokemon in the active
You could do something as simple as adding an extra -1/-1 counter to an enemy creature, or you could really ruin someone's day by doling out poison counters at an alarming rate
At the tradeoff of power and the Fleet Footed ability, Tapu Koko instead has free retreat, which makes it a decent pivot but Miraidon ex decks, which is the likely home of Tapu Koko ex, already runs Latias ex for free retreats
As a vehicle, it can stay back while being less vulnerable to interaction, and you can crew it up and attack when you know youll get value out of it and it wont be destroyed
In the case where you cant find Gravecrawler, Liliana, Untouched by Death can fill a similar role
Collect Evidence vs