Avoid Dead Cards: Ben Rubin notes that one of the key ways a control deck devalues the other deck's cards is by making certain cards in that deck useless
Hes a bit of a nonbo with Tarmogoyf, but that can be mitigated to an extent, and hell be able to fit in decks that may not be able to cast/support Tarmogoyf
There are also plenty of straight-up merfolk tribal syenergies that round out the deck's ability to close out games, too
Dreamdew Entrancer Hot take: Dreamdew Entrancer is better than Mulldrifter in the frogs deck
In the rare case where the original creature is copying something else when the offspring ability resolves, the token enters as whatever that creature copied, except it's a 1/1
A couple of highlights from this bonus sheet are Faithless Looting, Lingering Souls, Mayor of Avabrook, and Falkenrath Aristocrat