Pretty cards that are thematically appropriate might be a major thing, but the biggest thing is how they play
Breed Lethality, from the Commander 2016 set is a deck I keenly considered for the more competitive options
Mitsuhiro Arita External: Pokemon.com , Bulba #ad / Affiliate Links: TCGplayer , cardmarket , Amazon , eBay When it takes a defensive posture with its fists guarding its face, it could withstand a bomb blast.
Meanwhile Veteran Beastrider lets you dictate the pace of the game, excelling on both offense and defense
(2017-08-25) If your untap step is somehow skipped as your next turn begins, your phased-out permanents won't phase in until the next untap step you actually have, but you'll no longer have protection from everything and your life total can change again
If your playgroup is okay with them, go wild but you can't play them in tournaments or more formal settings