I've been playing it since BFZ was announced so I'd have it at the ready to deal with new manlands. And considering the hexproof on the UG one, this is one of the only ways to answer it.
And once we do get enemy manlands, it'll increase the value of Powder Keg in comparison to Ratchet Bomb by another 50-75% of Keg's exclusive targets. Wouldn't be a bad idea to pick one up for the on-deck binder in prep for the next Zendikar block anyways. Plus, it also has value against cards that make lands become creatures, like Koth of the Hammer and Nissa, Worldwaker too. It currently has 11 pretty important targets in my 540 cube that can't be killed by Engineered Explosives or Ratchet Bomb. While the quantity of targets for Bomb is higher, control uses a lot of sorcery removal and sweepers to protect themselves, and manlands (and animated lands too) are a big threat to late game stability. Not to mention that it takes Bomb a lot more time to build up enough counters to deal with a lot of its exclusive targets, and Keg can immediately cold its respective threats the second it resolves.
Also, if the Return to Zendikar brings us 5 more manlands this year, keep Powder Keg in mind, as it's an excellent answer to manlands for the same reason.
My 630 Card Powered Cube
My Article - "Cube Design Philosophy"
My Article - "Mana Short: A study in limited resource management."
My 50th Set (P)review - Discusses my top 20 Cube cards from OTJ!
My 630 Card Powered Cube
My Article - "Cube Design Philosophy"
My Article - "Mana Short: A study in limited resource management."
My 50th Set (P)review - Discusses my top 20 Cube cards from OTJ!
Just my $0.02.
My 630 Card Powered Cube
My Article - "Cube Design Philosophy"
My Article - "Mana Short: A study in limited resource management."
My 50th Set (P)review - Discusses my top 20 Cube cards from OTJ!
My 630 Card Powered Cube
My Article - "Cube Design Philosophy"
My Article - "Mana Short: A study in limited resource management."
My 50th Set (P)review - Discusses my top 20 Cube cards from OTJ!
Treetop Village
Celestial Colonnade
Creeping Tar Pit
Lavaclaw Reaches
Raging Ravine
Mutavault
Mishra's Factory
and maybe Stirring Wildwood
Are the ones I would expect to see at 450.
My 630 Card Powered Cube
My Article - "Cube Design Philosophy"
My Article - "Mana Short: A study in limited resource management."
My 50th Set (P)review - Discusses my top 20 Cube cards from OTJ!
My 630 Card Powered Cube
My Article - "Cube Design Philosophy"
My Article - "Mana Short: A study in limited resource management."
My 50th Set (P)review - Discusses my top 20 Cube cards from OTJ!
My 630 Card Powered Cube
My Article - "Cube Design Philosophy"
My Article - "Mana Short: A study in limited resource management."
My 50th Set (P)review - Discusses my top 20 Cube cards from OTJ!
Also, if the Return to Zendikar brings us 5 more manlands this year, keep Powder Keg in mind, as it's an excellent answer to manlands for the same reason.
My 630 Card Powered Cube
My Article - "Cube Design Philosophy"
My Article - "Mana Short: A study in limited resource management."
My 50th Set (P)review - Discusses my top 20 Cube cards from OTJ!
My 630 Card Powered Cube
My Article - "Cube Design Philosophy"
My Article - "Mana Short: A study in limited resource management."
My 50th Set (P)review - Discusses my top 20 Cube cards from OTJ!