Unidentified island egg

{1}{u}: Draw a card then discard a card.
When you draw a card put a permanent strength counter on Unidentified island egg.
When Unidentified island egg has 5 permanent strength counter on it. exile Unidentified island
egg remove half the permanent strength counter rounded down, and return to to the battlefield transformed.
Hatchery(can be a commander with any number
of creatures with hatchery)