Every time you flicker a creature, you draw cards
It's one of the most powerful Floodgates in the entire game, especially in Control decks where you aren't summoning many Monsters to begin with
Card Text:Island Guardians, Ready for Battle
Red's single-best addition to Squirrels are burn spells like Firebolt, which give your deck a way to remove blockers and deal those last points of damage
So pretty much, legal Slifer can wipe the entire Orichalcos board using its effect alone and not allow your opponent to drop Kutora to summon Shunoros
Along with this, Goat Control plays powerful flip monsters as well as a small number of tribute monsters (mainly Airknight Parshath, Jinzo, or a Monarch)