arcades mtg commander deck Cloud, Ex-SOLDIER Arcades, the Strategist WALLS TOUGHNESS

At its simplest, it removes a creature from combat and gives it an onerous cost (crew 5) to get it back in on future turns

This is where Scryfall can be a great help

Avabruck Caretaker is a great card, but it's a bit too expensive for competitive formats except commander

Azorius has tons of these, like Kraken Hatchling or Wall of Omens

Honorable Mention #2 (#12 Overall) - Viral Drake Check out this four-drop 1/4 uncommon with flying and infect

Teferis Moat is one such example where the reference is quite clear, although it puts a different spin on things by caring about the color of creatures that want to attack you