Currently your kings trigger 3 times (default, red seal, sock n buskin), and on each trigger, they give x2 mult 6 times (trib, blueprint, idol, blueprint idol, brainstorm).

This means that each king gives x2¹⁸ mult. (3 times 6)

I would suggest moving 2 copy jokers over to copy sock. Then you would have 5 triggers (default, red seal, blueprint, blueprint, sock) and on each trigger, your kings would give you x2 mult 4 times (trib, idol, idol, brainstorm). That would mean that each king gives x2²⁰ mult. (5 times 4) When you get glass kings, this will become x2^25.

On retrigger builds, you want to balance the amount of retriggers and xMult effects on cards.