Having to pay life and mana for the extra card is a little rough but you don't have to add anything after the mill, making it a recurrable mill engine for reanimator decks, descent decks, self mill etc
6 Light Ledian Light Ledian is an interesting card because it has a move that affects other Pokemon for a consistent duration without the use of any counters or special identifiers
However, Recurring Nightmare never made it into MH3
With enchantment cards, Manifest Dread, and various other ways to enable graveyard filling, there will be lots of opportunity to benefit off Delirium in this set
Poison counters arent an effect players clamor for and Im certainly not looking to give the infect or poison decks that already exist a massive power level upgrade
Noctowl Noctowl is another useful support Pokmon, making the list because of its ability Jewel Hunt