Orvar, the All-Form
First, if someone says they're going to have Lutri be their companion, it's the easiest thing to fix: you just say, "Hey, did you know you can't do that?" and it likely changes what their deck is doing very little
If damage is prevented, reduced to zero, or otherwise doesn't happen, you won't gain any life
No matter what, you'll get all the benefits you are capable of receiving assuming each of your Myriad tokens hit - if the player with the most is you , you won't get it, but you will if it's anyone else
So, make sure that one big hit counts, or at least have a backup plan while this fiery fox takes a breather
As of March 2020, over 30 billion Pokmon TCG cards have been sold worldwide