ability that really makes this Maui broken
Many decks tried to smooth out their mana curves in order to try and make Void less devastating, but there always seemed to be a good number to choose, and the existence of quality bounce spells Repulse and Recoil meant you often had a decent read on their hand even if you hadn't looked at it directly and also made it much easier to leave them with multiple cards in the same casting cost and not take damage while building up to five
Drifloon does 30 damage for each damage counter on it, meaning that it can be used similarly to Scream Tail in the Gardevoir ex deck
Card Name Mana Cost Type Legendary Creature Phyrexian Horror Rarity Mythic Rare rules Text If one or more tokens would be created under your control, twice that many of those tokens are created instead., Sacrifice two other artifacts and/or creatures: Put an indestructible counter on Mondrak
Echo essentially asks you to skip a turn, but Vanishing 3 gives you plenty of time to make use of a card, and it's an easy downside to work around too.
For only two mana, if you draw this artifact early, opponents will be forced to start milling from the jump, giving you more options to choose from when you inevitably go rummaging through their graveyards for goodies