mtg split cards Sudden Spoiling [Time Spiral] Heavily Played Foil creatures target player controls lose all abilities and have base power and toughness 0/2. Ranking Guilds Of Ravnica Split

They also need some method to finish you off, which is often a card which doesn't do much for the deck otherwise

Oloro, Ageless Ascetic Oloro, Ageless Ascetic is one of the original commanders from the first Commander set, and its still good and playable to this day

Massacre Wurm A wrath effect on a (really, really big) stick, Massacre Wurm enjoys being reanimated to kill the table with that life loss ability in decks with Araumi of the Dead Tide or Meren of Clan Nel Toth

Rating: 1/5 Croquet Mallet It's White Rabbit's Pocket Watch except single use only, so worse

As a rule of thumb, Ive found that if the card(s) in question cannot win you the game outright, the answer is usually No. Cards like Insurrection, Finale of Devastation, Rise of the Dark Realms, Armageddon, and Expropriate are cards that often belong to this category, and should be added very sparingly to your deck