minimum deck size yugioh Complete Custom for Yu-Gi-Oh! Deck size - Yugipedia

Because of the situational nature of this first move, most trainers will be more intent on using this legendary pokemon's Aero Force, which acts much like Shining Ho-Oh's Fire Blast, though will deal more damage and is much easier to power up thanks to the simple energy cost

Ancestral Recall draws you cards or forces your foe to, at instant speed, for by far the best base rate in the game, and with exactly zero drawbacks

However, I'd never built one in mono-blue before Minn

They still present an attack threat if left unchecked, but in most cases, you'll be using them for their +2,000 Counter effect

It fits into almost any deck, and it gives you a second chance at your best plays, whether thats a big creature, a powerful spell, or a key land