For example, if Nethergoyf is in your library, its toughness is determined by the ability "Nethergoyf's power is equal to the number of card types among cards in your graveyard and its toughness is equal to that number plus 1." If your graveyard consists of an artifact card, a creature card, and an instant card, you won't be able to find Nethergoyf with Recruiter of the Guard since Nethergoyf's toughness will be 4
Broad applicability is quite limited, needing to meet the Modified requirement, but in decks that are pushing Auras, +1/+1 counters or Equipment, this last of the Kodama cycle could pack a punch
You can also treat it as creature or planeswalker targeted removal with its mana and discard ability
(9/19/2025) You must follow all normal timing rules when casting a spell with mayhem
Two elementals joined their Blue Water counterpart, going away after Fourth Edition
This card fits well into most green decks that can spare a second turn to open the mana faucet wide open