Helix Elemental

Haste, echo {r}{r} (At the beginning of your upkeep,
if this came under your control since the beginning of
your last upkeep, sacrifice it unless you pay its echo
cost.)
Whenever Helix Elemental's echo cost is paid, it
deals 3 damage to each player.
At the beginning of your end step, you
gain life equal to the amount of damage dealt to
creatures this turn.