I'm certain that if there's anyone who played Magic the Gathering before, they will like the idea.
Basically about half a year ago on a polish DM forum we had an idea of creating something similar to Planechase from MTG. We made about 20 cards and then the forum has closed and we forgot about the idea, but now there's a new forum online and the Planechase started to live again, now with full deck of 40 cards.
This section was rewrote on August 13th, you can get more information now.
If you don't know how this works: players are playing with their own Duel Masters deck, with any format they like (maybe except TCG as Planechase features some things that weren't in TCG in that time, like Ninja Strike). The addition is a new planar deck containing 40 Plane and Phenomenon cards and a planar die. Planes are cards that generate a persistent effect on the game (the upper one) and a Chaos effect that occurs whenever the Chaos is rolled on the planar die (we'll go to the die in a second). Phenomenons are similar, but they have one effect that occurs and then are "planeswalked" away. Planeswalk is an action where you put a current Plane on the bottom of the planar deck and reveal another one from the top. At the beginning of the game one card from the top of the planar deck is revealed. Normally, whenever players can summon their creatures and play their cards, they also can roll the planar die. First roll of the planar die in a turn is free. The next one is 1 mana of any color, and every next is one more than the previous one. The die has the planeswalk
symbol on one of the sides and a chaos
symbol on the opposite side. The other sides are blank. You can also use a normal D6 for this purpose, if so, planeswalk is one and chaos is 6.
The game occurs as it should normally, players win by breaking shields and attacking etc. Planechase just adds a bit of randomness and luck to the game that is really, really fun.
Example of a Plane Card
Example of a Phenomenon Card
How do you like the idea? Share your thoughs