The former two help you survive, while the latter clears pesky Trap cards, deals with Pendulum Scales, and even prevents an untimely Lunalight Wolf from sealing your fate
C Common Crystal Conclave X TRAP Continuous Once per turn, if a face-up "Crystal Beast" monster(s) you control is destroyed by battle or card effect: You can Special Summon 1 "Crystal Beast" monster from your Deck
The resulting 160 power move is enough to destroy most Pokemon outright, and will leave the rest ready to fall over
Its annoying that Bonecrusher Giant, one of the best aggro creatures in the format, is immune to it, as is Lovestruck Beast, but it does kill a lot of different things Questing Beast, Kazandu Mammoth, all the Rogues, all the Angel tokens, and so on
Parameters: N = 60 , K = 1 , n = 12 , desired: k 1