I've played a lot on my phone, hit infinite multiple times on ladder and conquest. The game is not free and it's very exhausting.
My insights:
1. The game is not optimized for mobile, while using the mobile framework on PC. I get 5 or 6 crashes every hour and the dev team either is so lost that they don't know where to start or they just don't care. I have sent multiple reports on Discord and ingame to no avail.
2. Series 5 cards are too frequent and intentionally power creeping older cards, making f2p players unable to compete in the meta.
3. Predatory bundle pop-ups.
4. Season pass exclusive cards for both Premium and Super Premium - remember Fantasticar?
5. AI art scandals.
6. Missing Series drops?
7. Event Pass rework, a great value package ruined for no apparent reason.

But also:
1. The Marvel Snap Store in browser is a great deal, with daily log-ins and promo codes with credits and Variants.
2. Fun gameplay loops, distinctive archetypes. Something for anyone.
3. As a casual game, great.
4. Fun with a friend, interestingly fun draft format (not official).
5. The energy system is a fine resource system, however cards built on it inclusion makes the gameplay very distinct.

I don't care for the Marvel IP, I'm here for the gameplay. I've had great times playing this but as of last year - abysmal.
I can't help but laugh at the fact that a mobile game is not optimized for mobile. Honestly I would still play if I could on mobile.

actual micro transaction cancer from hell. ben brode got me once with hearthstone . NEVER AGAIN.

fun easy to play