Zanarkand, Ancient Metropolis - always a banger during Distant Worlds, having a fail case of this being a 6/6+ creature in the late game if drawn late is something that could work out in its favor
It doesn't have to be the same player, planeswalker, or battle that The Grim Captain is attacking
Deathtouch and forced combat decks can benefit from turning your opponents threats into artifacts on your side of the board
Legality depends on the tournament format -- Rikku, Resourceful Guardian can be legal in some formats and banned or restricted in others
Consuming Aberration, Urborg Lhurgoyf, or even Tarmogoyf are nice
This approach represented jobs, in-game items, and character advancement