How secure is a seed generated with a non-ideal dices?

Hi,

several tools such as coldcard or the BIP-39 tool by Ian Coleman allow us to generate seeds using a dice.

How secure are wallets generatd from a non-ideal dice? (assuming the common amount of dice rolls)

For example, dices with a 1-outcome probability of 1/3 and the probabilies for the 2,3,4,5,6-outcomes are evenly distibuted?

Thanks!

submitted by /u/Panic_Current
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