New Grinding Modes:
1. Ironman Mode
That'd be similar to the "Survival Mode" (http://"Survival Mode") proposal, but the survival mode that was proposed was based on HP, which I think is a bad thing cause even tho the guy that proposed it also proposed to set the limit HP to 100, it'd benefit mass healing decks(ones with miracle, feral bonds, etc), and I think limiting the type of decks you can use would be bad.
So it'd be the following way: the more you win in a row(without losing), the more electrum you'll win(smth like a 10% bonus in the base reward for each consecutive win) , but if you lose, you'd lose all of the electrum you won, so it'd be up for you to know how consistent can your deck be. To avoid farming abuse, using Ironman Mode would work like pvp1(no upped cards) for AI3 and lower.
2. Gambling Mode
This mode would consist of betting, and would be available only for FG's, it'd work the following way: before knowing which FG you'll face, you'd be required to bet any amount of electrum you want, if you win you win that double that amount, if you lose, you lose it all. As most FG farming decks run around 50% winrate, I think it'd be a nice risk, also it'd encourage the building and using of slower decks that have a better winrate, as for today it's a lot better to use lower winrate decks that are faster. OFC this mode wouldn't be available for the oracle predicts for you, and maybe you can have a specific amount of times you can bet per day.
Daily Quests
You'd have to make a deck with 5 of the card oracle gives you and beat/em an specific opponent for an specific number of times with it.
Reward: no idea.
Level Based PVP
With the introduction of the Arena system and LVL's, I thought it'd be fun to be able to do real time pvp matches using your skills, so it would work similar to the arena, but would be like regular pvp, beating a higher lvl would result in better reward, beating a low lvl would result in lower rewards, etc.
Although I really dislike the kind of advantage lvl gives one over the others, I think if it's limited to a pvp mode(like pvp1/2), it could be fun.
The skills would be set by the player the same way you set your deck.