While trying to think of things that were host or augment-like, I realized we had a brand-new mechanic coming up in Ikoria: Lair of Behemoths that fit the bill, something called mutate
The cheaper creatures in the deck are threats themselves, so The Gitrog Monster naturally survives in a lot of games
players, the love of the card game evolved from watching the anime in the late 90s and early 2000s
It has an incredible impact as soon as it enters, generating card advantage by drawing a card while making your opponent discard and stopping them from developing a board if you cheat it out fast enough
Japanese Pokmon Card Rarity Symbols Japanese cards skip the shapes and print a letter code near the collector number
Control decks hate it: dealing with just one planeswalker is already a pain, but two of them are somewhat impossible as few board wipes can hit them outside of the ones like Burn Down the House