Common mistakes new tanks make

[Aaramis]

Perhaps a better replacement for this situational thing is an actual tip; Tanks, did you know that most of those big AoE cones and circles can be interrupted? It's true! Your stuns can save you damage and your healer some precious mana by interrupting some of the more pernicious moves, such as Aiatar's poison breath. Rather than trying to run out of them, save your stuns for these moments. Every single precious stun counts!

Plus if you're interrupting, then you don't have to move. Hey, it's a win-win!

Stuns can miss. It's rare, but it's happened to me. And I died horrifically!

Don't rely 100% on stuns, or leave it so late that you can't run out of the AoE if you need to.