Herald-021, Project Overseer

Hexproof

Whenever you cast a Artifact that costs {2} or more, add two {e} counters.

{4}: Create a Energy Vault Token, add any number of {e} to it you have to Energy Vault,
it has "During your upkeep, select Artifact Creature you control, it has +1/+1 for each {e} Energy Vault has until end of turn."