Characters with Ward like Jetsam, Riffraff and Flotsam, Riffraff (if you have Jetsam in play) are particularly sticky , while Evasive characters like Don Karnage, Prince of Pirates and Wildcat, Mechanic can be hard for your opponent to remove
Benedikta Harman (Ishai, Ojutai Dragonspeaker) Rating: 1/10 Ishai, Ojutai Dragonspeaker is a card that was designed for Commander, so it doesnt quite work in 1v1
Ragavan, Nimble Pilferer is so strong that it had to be banned in Legacy, currently terrorizes Modern as part of Boros Energy, and it's very often seen as part of the 99 of top-tier cEDH decks
III Flames of Rebirth Return any number of target creature cards with total mana value 6 or less from your graveyard to the battlefield