Arena of the Ancients does shut down legendary creatures, but the effect is symmetrical, so unless you specifically craft a deck that avoids them, it's going to impact you too
from Fallout and Mardu Surge from Tarkir: Dragonstorm Commander )
Dee Kay, Finder of the Lost The unique mechanics of Dee Kay, Finder of the Lost warranted a mention
Disney Lorcana Set 7: Archazia's Island features a two new Single-Player Decks (formerly known as Starter Decks) featuring the new Dual-Ink cards: Ruby & Sapphire deck featuring 007-126-belle-mechanic-extraordinaire and 007-136-beast-frustrated-designer
You will always be naming Assassins, which will keep most of your creatures on the battlefield
A premier example is the Pauper Faeries deck that focuses less on controlling the game and more on disrupting the opponent while beating down with small fliers