Of course, you dont even need to run the sea creature gambit for Krothuss to work, it just pays you off immensely if you do
The card has Convoke, the decks central mechanic, and it also rewards you for generating tokens, the decks most prominent sub-theme
TypeInstant Collector Number126 Raritycommon ArtistRyuichi Sakuma Tiered (Choose one additional cost.) Until end of turn, target creature you control gains "When this creature dies, return it to the battlefield tapped under its owner's control" and has the chosen base power and toughness
I would generally value the bonus milling at zero or perhaps even a slight negative if it risks helping out my opponent, however, so the base effect must really be strong enough
Naturally, some cards see more demand than others
The Archon is a 3/2 with a highly useful protection ability