R'nrogk, Ever-Growing

Whenever R'nrogk, Ever-Growing enters or attacks, exile up to one Dragon card from your graveyard with a storm counter on it.

R'nrogk gets +X/+X equal to the total power and total toughness of Dragon cards you own in exile
with storm counters on them, and has all keywords, activated abilities, and triggered abilities of those cards.

"Your feeble time is now, old friend..."