i have a friend who did peyote once, it cost her $25 for a button, she tripped for 3 days, the first day was full of puking, then she tripped hard and enjoyed it very much, then came the second day and tripped very hard and got sorta tired of it, then came the third day and she was praying for it to end. Im sure it'd be one hell of an experience, but be warned it lasts for awhile. and yes it is very rare.
Peace!
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"A thousand mile journey starts with one footstep"