#3 - Mother of Runes Printed in Urza's Saga , Mother of Runes defined white decks for a very long time, and still sees an incredible amount of play in Legacy
Craft only as a sorcery.) Artifact Color tag templates(None) Heirloom Blade Equipped creature gets +3/+1
Whenever you put a spell or effect onto the stack, priority goes to your opponent(s) before it resolves
A board full of elves gets taller as it gets wider, meaning that the power and toughness of many elves grow larger as you accumulate more creatures
There are a few hyper-specific cards that care about permanents transforming, like Corruption of Towashi and Cult of the Waxing Moon, but none that are too competitive in Commander
This caused part of the ink to stick to the back of the other sheet, causing not only Thick Grey stamps, but also the following variation: Black Back Imprinted stamp: Now were going from the front to the back of the card