When Hearthstone came out I played it a bit, but it never caught me, so deleted it quite quickly. Runeterra, on the other hand, really sucked me in thus far (1.5 weeks).
Pros
- Love the interaction with slow and fast spells
- Extra mana slots for spells
- Champion levelling
- Expeditions
- Earning new cards and wildcards that enable players to build a strong, custom deck (from internet) after one week.
I am curious to see if I’ll be able to build a 2nd custom deck with 2nd week vault awards (which will be required to keep me with this game).
Edit: 4 weeks in. I have three good decks. Still liking the game, but Champion Cards are scarce. Not sure how long this will last. Game is designed to get you spending money eventually.