I've played against Rakka Mar and she's quite effective, also effective Ethersworn adjudicator. It also really depends on how the deck is built around these cards. cliffrunner behemoth can be a beast in the right deck. Lifelink gets you through in multiplayer, add in doublestrike and your in business. Also tokens are popular in my playgroup so volcanic fallout is a beautifull card.
I'd like to suggest a new card as well Yoke of the damned This card is designed for multiplayer. You can sac etc or just let it be and someone else will take care of it.