Your "Coin 2.0" is a terrible card idea. There are decks that kill fast but run out of steam. So if that deck has a win rate of 50%, then turn 5 comes along, it's "Coin 2.0", and suddenly they win half the games they should've lost, bringing their win rate to 75%.
WAR OF THE ANCIENTS! Do it in Caverns of Time with a Chromie Hero and time travel theme. You could even do CoT for a whole year with each expansion focused on a different old lore piece. There's a ton of potential WoW has barely scrapped the surface on.
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Your "Coin 2.0" is a terrible card idea. There are decks that kill fast but run out of steam. So if that deck has a win rate of 50%, then turn 5 comes along, it's "Coin 2.0", and suddenly they win half the games they should've lost, bringing their win rate to 75%.
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WAR OF THE ANCIENTS! Do it in Caverns of Time with a Chromie Hero and time travel theme. You could even do CoT for a whole year with each expansion focused on a different old lore piece. There's a ton of potential WoW has barely scrapped the surface on.