Roiling Vortex - 156 R ZNR

At the beginning of each player's upkeep, this enchantment deals 1 damage to them.
Whenever a player casts a spell, if no mana was spent to cast that spell, this enchantment deals 5 damage to that player.
{R}: Your opponents can't gain life this turn.

rare
Enchantment
From the Magic: The Gathering set Zendikar Rising.