M

[tawdry tapir]

M (you can only get M jokers)

[tawdry tapir]

Or just M jokers + jolly jokers are much more common

[tawdry tapir]

but an M deck would be

very M

[stable owl]

What if “when boss blind defeated, create a jolly joker”

It feels a lot more natural for m synergy than making it so you only have m jokers

[shadow anvil]

Negative

[stable owl]

LOL