With something like Raff Capashen, Ship's Mage, you can flash this out as needed
Even if you dont build around Treasure, you still draw off fetch lands, regular sacrifice effects, and so on, all while turning Korvold into a lethal threat due to its +1/+1 counters
Note that one card you might imagine would be great, Stonewood Invocation, can definitely be useful but doesnt work as well with Riku as you might first think
Ego Malga Kubiak, 1985 Dream version of masturbation and some more dream games of the dawn. Anna Casparsson Peter Weiss, 1960 A documentary film about the 99 year old artist Anna Casparsson
Back in the day, people would pair it with cards like Cunning Sparkmage to kill any creature on the spot
Jwari Disruption