mtg marvel secret lair groot cards Abundant (Growth) hidden card | Kieran Elmer draw a card. MTG Marvel Groot Secret Lair

Sylvan Library is a classic repeatable card draw engine, and can net you an extra two cards per turn (provided you have the life to pay for it)

4 mana draw 4 at instant speed seems VERY good

You may do several things during the main phase

Skyshroud Poacher Skyshroud Poacher has an incredibly powerful tutor ability, effectively bringing the rebel template to a different archetype

Elas il -Kor, Sadistic Pilgrim Elas doesnt seem great in the 99

In fact, its probably more useful to think of the archetype as Grixis Delirium and view the individual madness spells or graveyard payoffs as interchangeable tools that your discard engine can utilize