Enchantment
At the beginning of each player's upkeep, Roiling Vortex deals 1 damage to them.
Whenever a player casts a spell, if no mana was spent to cast that spell, Roiling Vortex deals 5 damage to that player.
: Your opponents can't gain life this turn.
Don't think it makes the cut, but I could be wrong and this certainly at least deserves a thread as a pseudo Sulfuric Vortex-lite.
I don't think that this is going to make it into my cube, but it's definitely a neat Vortex-lite. I'm already running Rampaging Ferocidon as a second card that shuts off lifegain and damages players, which I think is better than this, and I'm fairly confident that 3 of this kind of effect is too many.
It's not bad. The anti-lifegain clause is quite an upgrade to Curse of the Pierced Heart, although paying for activation is less appealing than the straight up 'players can't gain life' from Sulfuric Vortex (even if this means you can still gain life, a mana tax is always rough).
I don't think we have room for this but I could see this as a cube card.
Roiling Vortex
Enchantment
At the beginning of each player's upkeep, Roiling Vortex deals 1 damage to them.
Whenever a player casts a spell, if no mana was spent to cast that spell, Roiling Vortex deals 5 damage to that player.
: Your opponents can't gain life this turn.
Don't think it makes the cut, but I could be wrong and this certainly at least deserves a thread as a pseudo Sulfuric Vortex-lite.
Draft my cube! (630 cards)
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I don't think we have room for this but I could see this as a cube card.