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
Crown Zenith's wide distribution means that raw copies are available at reasonable price points, making this one of the most commonly recommended Charizard cards for collectors who want a premium piece without a premium price tag
Its also the primary delirium enabler for the deck, so landing one early and using either planeswalker to force it through will likely be your best early curve
Part of the lovely presentational touches I mentioned earlier is things like lavish pack-opening animations, where each booster pack acquired can be opened with a flourish, cards revealed individually, common to rarest, like youre doing a breathless pack opening for YouTube
Plus this is black, which opens up EDH decks that cant run green like Phenax, God of Deception and Lazav, the Multifarious