You would take half with Gisela out, so just a single damage per nonbasic land you are running, while your foes double, so essentially four damage per nonbasic land they control
With this three-booster blister at $39.93, the cost-per pack comes down to $13.31 saving you $6.64 each
While three casual decks have a solid chance in a pod with one high-power deck, three high-power decks will be hard-pressed to eke out a win against a fully optimized Kenrith, the Returned King
Geosurge is still good enough to drop a big finisher (Inferno Titan, Wurmcoil Engine, maybe Balefire Dragon if you want to get cute) on turn 4, but that requires having both the enabler and the big creature in your starting 10 -- and remember that contemporary mono-red doesn't really have filtering or card draw
Monetary value aside, leave a comment and let us know what your personal chase card is
Asinine Antics has the potential to be that auto-include card in blue EDH decks