MvCI/Game Mechanics/Infinity Stones
Infinity Stones, though not entirely unique to the VS. series, adds a new dimension to the game by allowing you to select a stone during character select and change the outcome of battle. Stones offer the ability to change your experience in how the game is played, even if you use the same team! Finding the stone that fits for your team is important but experimenting with multiple stones is encouraged.
There are two primary functions for a stone, the Surge and the Storm.
The Surge is a basic one button input that acts as a special attack, stones can be chained or canceled from any normal or command normal and can cancel into hypers. Each time a Stone is used, it builds a bit of Stone Guage Meter which when built to 50% or above, can activate it's Storm. Learning how to use each stone's Surge is extremely important in neutral, combos and mix-ups.
The Storm is an important come back mechanic that grants you special abilities based on your stone. Storm can be activated once you reach 50% of your meter which is built by either taking damage or continuous use of your Surge. You also gain a large chunk of Stone meter when your partner is killed as long as you aren't already in your own Storm. You can activate Storm during combos or even during block stun and gain a large portion of invincibility, though you aren't at frame advantage.