You can sacrifice a Clue tokens whenever you have priority and can pay the activation cost (usually )
It is, itself, a 2/2, and it can produce a bunch more 2/2s (likely after a sweeper), so it powers your synergies with Dusk // Dawn, Return of the Wildspeaker, and more
Whether this is for a 60-card constructed format like Modern, Pioneer, or Standard, or for testing out the Limited environment in a way that is cost efficient to competitive players
Well probably see this card show up a fair bit in more controlling lists
While you may think of activated abilities as something that cards on the battlefield use, like lands tapping for mana or planeswalkers using their abilities, theres actually no reason why we cant have abilities that activate from other zones
Happy Holidays everybody