I love that while the Hell Swarm bug has the silhouette that we associate with a hornet or a wasp, the details are all wrong
Cards printed in supplementary products like Commander decks, Masters sets, or Modern Horizons are generally not legal unless they were also printed in a Standard-legal set within the Pioneer timeframe
'Rec Sage', as the community calls it, benefits from the lower mana value and by being an Elf, a highly synergistic creature type for green decks
This can make use of surplus expensive spells which we cant afford to cast, and also ensures we get an immediate boost from Kerugas ETB which can otherwise be a little awkward in a deck that might already be struggling to use all its draws
If your 1st Edition English card is from any other set than these, then it is a fake Im afraid
After a creature you control dies, her transformation threatens a mini-sweeper that clears small boards, so token and creature-swarm decks cant overextend freely