Dice rolling

The planar die

Dice are used to create a random effect in game play. This mechanic is momentarily not part of the official Magic rules for the regular game, but has been used in supplemental sets and was considered for Battle for Zendikar.

Unglued

The rolling of a regular six-sided die as a mechanic was used on Magic cards in Unglued, and proved to be unpopular. Ever since, bringing six-sided dice to black border is something R&D has consciously chosen not to do.

Planechase

Planechase (2009) introduced the six-sided planar die, that features the planeswalker symbol on one face, the chaos symbol on another and four blank faces.

Battle for Zendikar

One of the mechanics that was considered for the Eldrazi in Battle for Zendikar was hedronize. Hedronize was an keyword action where the player rolled an hedron-shaped (eight-sided) die to get an effect. Thus, hedronize had eight abilities – you roll a dice and you do one of eight things (gain life, produce a spawn, etc.). The rules card that would have come in the pack would list them. The mechanic didn’t really play well because was a little too chaotic. Nonetheless, there were 8-sided Hedron dice given out at PAX.

Amonkhet

Players who attended Amonkhet were rewarded pyramid-shaped (four-sided) "lazotep" dice for each trial they completed. The dice (or counters) could be used to keep track of -1/-1 counter on their cards.