Its ability to refill a players hand simply by recurring cards from their graveyard alone is pretty amazing and makes the graveyard a notable place to watch when playing against green players
Same goes for Urza's Sylex
Its important that Kronk, Junior Chipmunk, stays around for longer as the cards ability Scout Leader means whenever it banishes an opposing character in a challenge, it can deal two damage to another character
If you're instructed to investigate multiple times, those actions are sequential, meaning you'll create that many Clue tokens one at a time
One option is to use the cards ability for card draw and discarding in conjunction with other characters that benefit from card draw and discarding such as Gustav The Giant, Terror of the Kingdom, Jafar, Striking Illusionist and Maleficent, Mistress of All Evil
At least neither of these sets are rotating out in April this year - their cards will remain playable until 2027