Sacrificing a creature can often come with upside, too: I had an Orah, Skyclave Hierophant deck that made incredible use of this
Large-print braille, 3.4"L x 2.2"W, easy to touch
However, for the first e-Series set, Expedition, both the Holo and non-Holo printings of the card each had their own Reverse Holo printing, resulting in two near-identical Reverse Holo prints of Yuka Moriis Poliwrath in the same set
Card draw is one of the better ways to ramp and fix your mana since you get more options per turn
Mystic Forge Mystic Forge provides two interesting effects, both tightly tied to card advantage
I had bought one a few months ago and loved it so much that I invested in 2 more to keep the rest of my toploaded cards safe