It all started with Angelic Sleuth from Streets of New Capanea , and with the release of Murders at Karlov Manor , we got Wojek Investigator, which can give us up to three Clues a turn, and Merchant of Truth, which is a Sublime Archangel for Clues
Both special sets are from August 1, 1995
Some Evolution cards can be played on other Evolution cards
Mono-red players maximize the abilities on Inti, Seneschal of the Sun because you follow up your turn-1 play with Inti, and attack with the buffed 1-drop
Three mana for a 4/4 with upside is sweet, even across three colors, although it hasnt seen huge amounts of play
Diamond Valley is a little-mentioned member of the Reserved List, with just one printing back in 1993, and both its age and its obscurity make sales infrequent