Ruby Carbuncle is a small monster, but when its Special Summoned, it also Special Summons as many Crystal Beast monsters from the Spell & Trap Zone as possible
You may end up down some cards on the exchange, but Modern combo decks are fragile enough that it may still work out in your favor
Along with that, it also makes it so that Creatures cant attack you unless their controller pays two mana for each Creature they control that wants to attack you
Like most things, the mana curve is not an exact science
Each Set Booster contains fifteen cards, with plenty of opportunities for opening multiple rares and mythic rares, including multiple legends: 1 Foil-etched legendary creature or Background (rare or mythic rare in 1 of 3 boosters) 1 Legendary creature or planeswalker (rare or mythic rare in 50% of boosters) 1 Legendary Background (rare in 1 of 12 boosters) 1 Rare or mythic rare (this can be legendary or non-legendary) 1 Traditional foil card of any rarity, including Booster Fun cards 1 Common or uncommon card with the rulebook treatment 1 Basic land or foil basic land 3 Common cards that are connected thematically 3 Uncommon cards that are connected thematically 2 Wildcards of any rarity 1 Art card or foil-stamped art card 1 Token, ad card, helper card, or a card from The List Set Boosters are available individually and in displays of 18 boosters
3 Linkuriboh An Excellent Link-1 Before it got banned, Linkuriboh was one of the better Kuriboh cards to use in a faster meta