Jakub Hradil, Worksleeper

Flash
When Jakub Hradil, Worksleeper enters the battlefield destroy target artifact or an enchantment
Jakub Hradil, Worksleeper can't attack unless you control a Bed
Jakub Hradil, Worksleepers strength is equal
to the number of Sleeping Kuba tokens you control
{t}: create a 1/1 Sleeping Kuba creature token with {t}: sacrifice this creature add 1 mana of any
colour to your mana pool