It's too important and every deck should run 3 except in Neos versions where you can cut some, especially if also running Loading
While it's not a requirement to play the game casually with your friends, if you have valuable cards, or if you're playing in a tournament, you absolutely need to have them
Thantis, the Warweaver Thantis, the Warweaver was designed for the Commander 2018 precons and was the alternate commander for the Lord Windgrace deck
(Dont apply Weakness and Resistance for Benched Pokemon.) [C][C][C] Cutting Wind: 70 damage
The high power level of the Ishizu Tearlaments deck pushed Master Duel into a player-coined "Tear 0" format, effectively discouraging deck diversity in Ranked Duels
Effect-wise, other than the rather seldom-seen-in-regular-sets die-rolling, Poultrygeist isn't actually super wacky