ive got a typical blade dancer-scrapper deck and i summoned till my marginal summon cost is beyond 500 and after merging and summoning, ive only got 4 blade dancers. talking about rng? this game is no better. you better calculate the odds of getting 4 cards only after 50ish summons plus 10ish merging, let me know if i have better chance at casino. fyi, this rare phenomenon happens around 70% of my match.