Sirius

Whenever one or more creatures you control becomes unblockable , draw a card, then discard a card and create a 1/1 clone Shadow token of any creature your opponents controls , (max amount is 3) At the beginning of combat , you may give a creature you control +1/+1 and double strike until the end of the turn . If you do, that creature can not be blocked by creatures with power greater that its power When Sirius leaves the battlefield destroy all the tokens he created