Pressure counter

Pressure counters are a type of counter introduced in Visions. They acted as an increasing resource for a sacrificial ability.
==Description==
Pressure counters first appeared on <c>Magma Mine</c> in Visions. It was an artifact that could add Pressure counters to itself. It could also be sacrificed at any time dealing +1 damage for each counter on it. The counters represented the magma pressure building up until it exploded with the sacrifice ability.
They reappeared again in Magic 2013 with <c>Hellion Crucible</c> which was a land that also could add Pressure counters to itself. It only needed to build up 2 before it could be sacrificed to create a 4/4 red Hellion creature token with Haste. In this case, the counters represented the pressure building up until a Hellion is born.
==Trivia==
* In Magic Online, the counter is colored green as its considered a positive effect and shares its icon with Magnet, Mine, Mining, Ore, Silver, Storage, Trap, and Winch counters.
==References==