The other format you can use playtest cards in is limited formats involving Mystery Boosters
Home printers cant typically print cards that look and feel like Magic cards, but theres a plethora of sites that let you insert a deck list and format a PDF file thats easy to print on regular printer paper
Guardian Project In any singleton format like EDH, Guardian Project reads cast a creature spell and draw a card. Any creature
The Pokmon trading card game has a surprising rising star, as a free promo Pokmon card begins selling for up to $100
When youve got a hard counter for two mana it feels great, but it can be a little awkward in how it fits on curve, especially if your not running a high number of flash and instant cards or one drop wizards
Magic also printed multiple versions of many of these cards, as both a classic retro frame and a full-art borderless version