Capricious Efreet destroy card at random how do you determine?

[BuzzB]

if i control Capricious Efreet how do you choose at random what card to destroy? because i know for discard i just choose a card from other players hand but what happens for destroy at random?

[Arix]

Any random method works. Flipping coins, rolling dice, anything like that.

[Jake1991]

What I did for this card is I flipped them face down, shuffled them, then chose one.