Siwonzo, Supreem leader

Vigelance, Mentor
Whenever Siwonso attacks, put a +1/+1 counter on each dog you control, for each counter put on a dog this turn exile the top two cards target oponents library and put a bone counter on each of those cards.
{g}{g}{g}Remove a counter from each dog you control with a counter on them: Choose one
• Create a 0/0 green and white dog creature token for each creature card in exile with a bone conter on them
• You may cast a spell or play a land from exile without paying its mana cos