Someone really did
You can choose to replace this draw with a dredge or not (if there are any dredge cards in your graveyard and enough cards in your library)
In a very simplified way, if there is less to spend mana on you are going to need less of it
He's also cheap to cast and recast in Commander
It comes jam-packed with powerful planeswalkers like Grist , the Hunger Tide , which can serve as a game-winning condition all on its own
If this card was Ritual Summoned using "Blue-Eyes White Dragon", when it declares an attack: You can change the battle positions of as many monsters your opponent controls as possible, and if you do, the ATK/DEF of those changed monsters become 0, also, this turn, if this card attacks a Defense Position monster, inflict piercing battle damage to your opponent