Detwenny God of chance

This card can ONLY be your commander
at the beginning of the game roll a D20; this creature's mana value is equal to the number rolled mana of any color can be used Its power and toughness are equal to half of that roll rounded down

This ability's mana value is equal to half the number rolled for the creature rounded down Whenever another creature is cast you may roll a D20 If the number rolled is 2-7 it gains haste 8-13 deathtouch 14-19 double strike 1 you lose 5 life 20 it gets all and has no mana