If tails, discard the top 5 cards of your deck
The Zombies The zombie typal deck enablers, including the most popular zombie commander, Wilhelt, the Rotcleaver, are key in any functional zombie EDH deck, drawing cards with Archghoul of Thraben and Undead Augur, making tokens with Headless Rider, recursion with Relentless Dead, and draining life with wincons Diregraf Captain and Plague Belcher
You can only use this effect of "Kuriphoton" once per turn
I understand Druddigon isnt quite at that same level, but if you understand the Plasma or Dark matchups against the deck, you know very well that these decks arent winning either of those matchups if they run Druddigon
All of them are varying degrees of expensive, despite the several reprints
The main weakness is its ability to win independently (which is why you often see it combined with Red or Blue cards to get the job done)