The way you propose the mulligan feature to work completely ruins how a card game is supposed to be. It's not a feature that is supposed to always give you x amount of playable cards or more. It's a feature that makes it so you can have a higher chance of playing something, anything, your first turn, so you don't have to discard.
The time method you said is a bad idea. PvP has enough time restriction, restricting time on duels against the computer isn't good. Sometimes I take over an hour to complete a duel because I am busy doing other things online, or have to go away from the computer for awhile and I don't want to exit the duel because I am winning.
I think 'completely ruins the way a card game is supposed to work' is something of an overstatement. Is excessive hyperbole the standard around here? If so, you'll have to excuse my newness - I'll work my way up to it.
Yes, I understand that such a mulligan feature would need to be carefully managed. However, as a one-shot that always happens - it's hardly overpowered. Does it improve the average hand? Well, yes - but that is, one suspects, the reason for a mulligan to exist.
As for the time feature: I agree, it would not need to be implemented for playing VS the computer, just for PVP (which I believe was implied by my post?).
As for cards to be created: Sure, a creature with <x mana, steal> would be pretty powerful. However, suggesting it is impossible to come up with a balanced such card is, well, defeatest at best. I mean, would 10 cost, 1/1, 3 mana + return it to your hand: steal be overpowered? I could be wrong, but it seems pretty weak to me. (or even sacrifice: steal). Sure, steal is probably a poor example, as it is very powerful, but there are plenty of similar abilities you could have (even targeted stealing: IE just weapons or just shields or some such). Fact remains: Game needs more stuff, with a preference for interactive, simple stuff.
And the game needs new cards, period. But people aren't too as much fans of vanilla creatures as they are for creatures with abilities. Granted, some more vanilla creatures would be nice to have, I prefer creatures that have an extra layer of help.
Scarabs also have the Devour ability, and with the new Pharaoh card coming out, scarabs will be a much better card. And creatures with the ability to steal are very OP. That's why they don't, and never will exist. The only way to get them are to get lucky with a Fallen Elf/Druid to mutate a creature that has the steal ability.
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