It reads: At the beginning of your end step, if one or more creatures died this turn, you gain that much life and distribute that many +1/+1 counters among creatures you control. Basically, if youre playing a deck that kills things or sacrifices your own creatures, especially in token decks, you get a lot of life and can make your creatures stronger
Syphon Sliver is the first of many youre looking to cut that doesnt stack when encored, making it an easy option to cut
Youd lose a handful of cards in one go, while your opponent barely invested anything
it lasts indefinitely, until Ambassador Blorpityblorpboop either leaves the battlefield or its base power and toughness changes again from another effect (for example, a power and toughness sticker being placed on it or its ability triggering again)
I came up with 3 variants that vary quite wildly