Playing Rivaz means you get to play the beloved Reanimator archetype, and given you can cast Dragons from the yard, a Buried Alive is even better than usual
It took only a tuner and a non-tuner to add up to the level of a specific synchro monster, and it was easily summoned from the extra deck
While not a board wipe card, it did shake things up, especially if you waited until you had one card (this one) and your opponent still had a handful
Regieleki V is down -1.0% over 7 days
One card called Anowon, The Ruin Sage allows you to destroy a target non-land card from the game which essentially means that you could end up deciding the outcome of the game if your opponent does not have any lands left because he or she cant play anything else due to this powerful black cards ability
Thats an incredibly cool title, and while the ability takes a little work, its worth it