Bertholdt, The Betrayer

Reach, Convoke (Your creatures can help cast this
spell. Each creature you tap while casting this spell
pays for 1 or one mana of that creature's colour.)
When Bertholdt, The Betrayer enters the battlefield destroy every artifact and
enchantment you don't control.
{2}{g}{g},{t}: Prevent all combat damage that would
be dealt to you this turn. Put a stun counter on Bertholdt.