Talk:Irelia/@comment-32096300-20180405132839/@comment-26808509-20180405140935

As 2 stacks. She gains stacks for every non-allied unit she hits with her spell, including minions, monsters and pets. If you want to engage the fight fully stacked you thechnically could hit a quick W into a minion wave befor you rush in.

Same thing with her ultimate, as it damages all units in the AoE and generates a stack for each of them.