The card's holographic effect makes it look like Mewtwo is surrounded by a purple aura
White is the color that stands to benefit from this the most, considering its lifegain abilities and generally weaker options for card draw
The new way this deck performs is with some targeted mill, but mostly incidental mill such as Psychic Corrosion and Altar of the Brood (Altar pairs great with Oona, Queen of the Fae as well) while controlling the board with cards likeDrown in the Loch and Aetherize, simultaneously hiding behind others like Dissipation Field and Crawlspace
This was not very player friendly and takes the enjoyment out of the game
Thus, that six-mana creature is likely to be 8/8 or even larger if you've built the deck around its abilities
The History of Transform in MTG Transform first came out in the fan-favorite Innistrad set in 2011, partly to represent the population of the plane turning into the monsters that the horror-inspired world was home to