While there are many online tools and even a magic proxy site or two that help generate designs, printing your own cards gives you more control over quality and durability
[[Sephiroth, Fabled SOLDIER]] turns into [[Sephiroth, One-Winged Angel]], granting: Super Nova As this creature transforms into Sephiroth, One-Winged Angel, you get an emblem with Whenever a creature dies, target opponent loses 1 life and you gain 1 life. Whenever Sephiroth attacks, you may sacrifice any number of other creatures
However, if you and your opponent agree that the cards are for casual, fun play, then using them is generally acceptable
Cartographer's Hawk
All your dorks block this 1/1, everything else makes it to your face
(CC'ed anyone lately?) Now that I've defined milling, let's dive into the next important topic: where did it come from