This means that the probability of opening a card which you play 3 copies of (going first) is 34%, roughly one in three games
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It'd be able to Summon all Gagagigos except the Level 8 one, and stuff like Bitelon (2400 piercer), Cranium Fish (2400 that discards WATERs to destroy set cards), Majioshaleon (2000 piercer that cannot be attacked if the opponent has backrow), Numen Erat Tetsudo (1800 Level 5 turtle that's a floodgate for special summons of 1800 or less ATK, and the biggest 2 monsters: Hyper Ancient Shark Megaloton (2900 ATK, Level 8, if it inflicts damage, it can destroy a monster) and Levia Dragon Daedalus (2600 Level 7, nukes field except itself if you pop Umi)
The archetype as a whole is effect-heavy, permitting cards like "Face-Off" (to counter "Fluffal Leo"), "Skill Drain", "Soul Drain", "Skull Meister", and "Effect Veiler" to take advantage
Unlike other summoning techniques like Synchro Summoning, where you have to match the star level of the monster you want to Synchro Summon with whichever monsters you tribute, any monsters in your monster zone can be used as a tribute to summon