Better MTG quests
So, we get 2-3 daily quests. First, not enough quests. But second, the quests don't actually influence playstyle. Yeah we get a quest "pls cast 20 spells of X color" and maaaaybe someone will stick around longer to get their quest done in a game. More likely, they will just spam the games with a certain deck combo over and over, until they get their daily quests done.
Here are better quests:
1. Summoner: Summon X token creatures of Y color over the course of the day.
2. Exalted summoner (unlocks after completing summoner) Summon X number of creatures of Y color in a single fight.
3. Caster of <insert color> Magic. Cast X spells of Y color over the course of a day.
4. Magister of <insert color> Magic. Cast X spells of Y color in a single game.
5. Slayer of <insert color> Get the killing blow on an enemy player with a single color creature or spell of <insert color>.
6. Path of assassins. Pick a named card in your deck, and get a killing blow on an enemy player with this named card. You cannot reuse the same card for path of assassins more than once per X days. However, this quest is repeatable.
7. Enchantress of <insert color> magic. Cast X aura spells of Y color in a single day.
8. Exalted enchantress of <insert color> magic. Cast X aura spells of Y color in a single match.
9. Warlord. Kill X number of creatures in a single day.
10. Exalted warlord. Kill X number of creatures in a single match.
11. Clockwork summoner. Play X card Y times in a single day.
12. Exalted clockwork summoner. Play X cards Y times in a single match.
Then, when a player has a quest active, on the winning screen if they win they don't get a win message if they kill the other player without working towards their quests. They get a message "you defeated <insert name> however you failed to complete your quest.
If they get progress towards a quest, they get a message that they defeated the enemy and gained progress towards X quests.
If they lose, but complete quest progress, they get a message, you were defeated by <insert name> but you still got progress towards X quest.
Etc.
This shifts the focus of the matches away from winning/losing and instead incentivizes players to be going for specific plays. It does nothing for the actual game of magic, instead you will be facing players who don't want to kill you outright. They might want to toss down a dozen enchantments and specifically try to kill you with eriettes passive ability. If you know what they want to do, and what you want to do, that changes the nature of the game.
Also, these quests could reward only 100 gold each instead of the hundreds of gold current quests give.