He's been playing Pokemon TCG competitively for three years, placing high in multiple city, regional, state, and national tournaments, and peaking with a 2nd place finish at the 2013 World Championships in the Masters Division -- not to mention he placed 7th in this year's Worlds last weekend with his Donphan deck
Amulet Titan, maybe, for at least one slot to get back a destroyed Slayers' Stronghold or Sunhome, Fortress of the Legion effect
Chandra, Awakened Inferno Let's be honest here
If you like the look of graded cards, then you could grade it for aesthetic reasons
[spoiler=NP Gain cards] Ryuudou Temple During your Standby Phase, place 1 NP Counter on this card and all face-up "Servant" monsters
Buried Ogre Plenty of decks, especially ones in black, would be happy to start with Buried Ogre in their graveyard