You said RG and discard!

(the Saga bit is an additive distraction. maybe you have
Summon: Fenrir? that one's strong, there's some value here if you do have any, but she's here to be
Rummaging Goblin+++.)
Plus here's everything else I know, which I would recommend
far less highly than Rydia:

Probably too powerful, but maybe not.

This is strong when it's strong, but when it's not strong it's practically blank. I had a lot of fun casting it in retail Limited.

Delirium made me think of card types made me think of battles made me think of the RG battle (card types matter!) that's also a discard outlet (madness!) and a Treasure token creator (all sorts of stuff!). I know the backside must exist, logically. I have no idea what it is. Wow that doesn't make a lot of sense at all, huh. What are you doing there,
Truga Cliffcharger?

Not a madness enabler, but does work with "discard matters" if you have any of that. Also, maybe too high power. But I love it.

"...at random" sinks this for me. But the base rate's acceptable and it's a dream to live, which I always comment on because it is the kind of thing I like to have in my cube.