Serpentix, Modular Hydra

Serpentix enters with x counters on it.
{t}, Move a counter from Serpentix on target creature.

Whenever a counter would be put on a permanent, chose one that hasn’t been chosen this turn, where x is the number of counters on Serpentix.
• Draw x cards,
• You gain x life
• Destroy target creature with power x or less
{bull} Serpentix deals x damage to target creature
{bull} X target creatures gain trample until end of turn