Hatchling of Potential

{t}: Put a +1/+1 counter on Hatchling of Potential.
As long as Hatchling of Potential has three +1/+1 counters, it gains hexproof and indestructible.
As long as Hatchling of Potential has five +1/+1 counters, it gains lifelink and vigilance.
As long as Hatchling of Potential has seven +1/+1 counters, it gains double-strike and flying.