Viveka, Eradicator of Old

If a source you control would deal damage to a creature with indestructible and/or hexproof,
instead put that many -1/-1 counters on it.
Whenever a creature with indestructible and/or hexproof dies, scry X, where X is that creature's converted mana cost, then reveal the top card of
your library and put it into your hand. Viveka, Eradicator of Old deals damage equal to the
revealed card's converted mana cost to target planeswalker or player.