(2024-07-05) If a card copied by one of the tokens had any "when [this permanent] enters the battlefield" abilities, then the token also has those abilities and will trigger them when it's created
Imagine combining [mtg_card]Skullclamp[/mtg_card] with [mtg_card]Bitterblossom[/mtg_card], or any other card that can create a lot of 1/1 creatures
Its hard to quantify an answer to that question, but Id guess that Gray Merchant of Asphodel is in the top five black game-enders ever
These cards are all meta, with Magby seeing play in the Ho-Oh Ex and Lugia Ex deck, Hitmontop being basically a Fighting-type Pheromosa with more HP, Zubat offering a Poison effect on its attack, Silver manipulating the opponent's cards in hand, Steel Apron being fantastic in Solgaleo Ex decks, and Dark Pendant being a passive form of discard in Darkness decks
Even if you decide to go all-in on Sram as your main way to win, you have plenty of options for low-effort backup win conditions