Dice Roller

Dice Roller is a small and simple bot for rolling dice easy way. Results of all dice rolls are returning in comfort format. Bot can roll multiple dice, special dice, dice with modifiers etc. You can use slash(/) commands, change commands prefix to comfort for your server or just mention bot. Also, Dice Roller can post DnD jokes.
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INFO COMMANDS
help - for list commands and more info about commands
about - for info about bot
stat - for getting numbers of shards and servers
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ROLL COMMANDS
roll - for rolling dice, modded dice and using postfixes(power words) [example: roll 3d6+d4 3d20/dh 2d20+2d4/dl:1-1]
powerwords - for list available postfixes for dice modification
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JOKE COMMANDS
joke hear - for random DnD joke from list
joke tell - for suggest your own roleplay joke [example: joke tell EN "My awesome joke!"]
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COMMUNITY COMMANDS
hello - for greetings message and get started
feedback - for send your feedback [example: feedback "Dice Roller cool!"]
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ADMIN COMMANDS (server admin only)
prefix set - for changing prefix on your server
prefix restore</strong> - for restore prefix to default
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POSTFIXES
explode - modifying dice to become exploding dice [example: roll 2d20/exp]
penetrate - modifying dice to become penetrating dice [example: roll 3d8/pen-4]
drop lowest - drop specified number of dice with lowest number [example: roll 5d10/dl:2]
drop highest - drop specified number of dice with highest number [example: roll 2d2+4d33/dh:3]
reroll - reroll dice with result on value or lower [example: roll 6d10/rr:1]