You can protect your combo from counterspells and protect your burn deck from fogs and other forms of damage prevention
So they are easy to find but very hard to collect them all
OP05-067-zoro-juurou is a nice card that ramps, along with being a Straw Hat, but you could replace him with ST10-009-jean-bart from the starter deck or someone like ST05-002-ain from starter deck 5
Heliod, Sun-Crowned Topping the list is Heliod, Sun-Crowned, sitting almost as far from its first iteration as possible
Cards like Teysa Karlov that make death triggers go off an additional time fit this definition, as is Hama Pashar, Ruin Seeker, which doubles room abilities of dungeons
If you were on the receiving end, it would seem hopeless unless you can somehow dig yourself out of it with some kind of removal