Nico can only level up into another "Nico" champion.

On Enter: If there's another water element card in Nico's lineage, look at the top two cards of your deck. Put one of those cards into your graveyard and the other on the bottom of your deck.

Whenever a card with floating memory is banished from your graveyard, put a lash counter on Nico.

On Champion Hit: You may have that opponent put the top X cards of their deck into their graveyard, where X is the amount of lash counters on Nico.