Coral Gallant Knight

As long as you control an enchantment, Coral Gallant Knight gets +1/+1 and has vigilance.
As long as you control an artifact, Coral Gallant Knight gets +1/+1 and has flying.
Whenever Coral Gallant Knight becomes enchanted, create a 1/1 colorless Eel artifact creature token.
{t}, Sacrifice an artifact: Put a +1/+1 counter on Coral Gallant Knight.