Crewmate

When Crewmate is on the battlefield create a colorless legendary artifact Tasks token with indestructible on your upkeep if you don't
own one.
{1}{u}- Sacrifice a clue token and add
a counter to the Tasks artifact.
{u}{u}{t}- Scray X, where X is equal
to the number of counters on the Tasks artifact.
Once per turn when a creature you own dies
create a colorless clue token.