I really love the common Orbs of Dragonkind, which nicely help ramp us towards our more expensive Dragons while providing a nice bonus effect for Dragon spells particularlyred provides haste, blue lets you scry, and the green one makes your Dragon a bit bigger and gives it hexproof until your next turn, making it more likely to avoid pinpoint removal for a while
Being nibbled for one damage by a single 1/1 Rat is often so inconsequential that it can be ignored, but even a few Rats dealing damage in the form of poison counters can be a real threat
For example, suppose I attack with [c]Zetalpa, Primal Dawn[/c]
Rather than being a 1/1 Squirrel or a 2/2 Zombie, they are just Soldiers, Goblins, Squirrels, and Zombies, which means the Unhinged tokens will get the job done no matter what kind of token of these creature types you want to represent