Roiling Vortex

Roiling Vortex

Enchantment (CMC 2)
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.