King Autamous, the Peaceful

Jump 5—{1}{w}{u} (You may cast this card for it's Jump cost. If you do, create 5 blue enchantment tokens named Mental Block with "you can't cast spells" and "{1}: Destroy this token.")
As long as you control 5 or more enchantments, creatures can't attack you.
As long as you control 3 or more enchantments, spell your opponent's cast cost {1} more to cast.