Its a troublesome card due to its ability that disrupts opponents strategy by moving opponents characters from the EnergyLine to the FrontLine
I had such a hard time choosing a favorite, but on reflection its got to be Fraying Sanity
For examples Lightning, Security Sergeant needs to remain on the battlefield, Grolnok, the Omnivore can only add croak counters if the card went directly from the library to the graveyard (usually because it was milled), and Kaya the Inexorables emblem only triggers at your upkeep and looks at legendaries
Thank you for reading
These characters aid in battle not through fighting, but by being pure "engines" - letting players draw, reshuffle, and recycle their cards
[Your Turn] When an opponent's Digimon is deleted by dropping to 0 DP, you may suspend this Tamer to gain 1 memory