A pretty simple yet fun game you got here :]

Anyway, just wanted to point out that "reverse time" is overpowered.
I mean, it's THE best way to get rid of monsters.

Compare it to Lightning which does only 5 dmg and costs 3 quantums OR Firebolt which costs 3 and requirs you to have a huge amount of fire q to inflict any serious damage.

Reverse Time costs TWO, but kills ANY monster without ANY disadvantage, even if it had 20 lifepoints.

Maybe the creator of that card thought that returning monster on top of the deck is some sort of advantage for the player on whom Reverse Time was used.
IT'S NOT.

It it EXACTLY same as KILLING a monster with let's say Lightning and then drawing the same monster, just because it happened to be the next card in the deck.
It ALSO slows down the deck by 1 turn.

You don't get an extra card because your strongest monster was killed by Reverse Time.
I think that it was meant to return the monster to the HAND not on top of the deck.
If it returned the monster to hand, it would probably be balanced.

Hope it will be fixed, the game is great and looking forward to PvP :P