Alder, Herald of Vraigoroth

When you play a legendary sorcery roll a D20.
•1-10 draw a card if its a sorcery put a +1/+1
counter on Alder, Herald of Vraigoroth.
•11-19 exile the top card of your deck and deal
damage equal to its mana cost to target
permanent creature.
•20 copy the legendary sorcery onto the
same targets.