If you want to stop someone from getting a Clue token, you have to counter the spell or ability that causes them to investigate in the first place like countering an Expose Evil, or using a stifle effect like Disallow to stop a triggered ability that would make a player investigate
Via Blogatog Mark Rosewater: I think well see more of both. While this doesnt immediately seem like an endorsement of future Un-set types in mainline sets, reading between the lines does support such a take
It's a wonderful effect to pad out your life total, especially combined with cards like Rhox FaithmenderRhox Faithmender and Beacon of ImmortalityBeacon of Immortality
Additionally, the Asian-English 1st Edition printings of sets from the Duel Monsters era of Yu-Gi-Oh
Acryshield are Australian leaders in acrylic displays producing the finest quality acrylic displays for your collection
The honest answer to that is a lot of different places. Not to stress the point too much, but the ramp effect is honestly good enough to see play by itself