These look extremely powerful, though we likely cant rely on them being creatures given that they automatically die in a few turns
Land Color tag templates(None) Marsh Flats , Pay 1 life, Sacrifice this land: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle
Its low power and toughness means its easy to reanimate or tutor up with Imperial Recruiter, and you can flashback it later for some extra tokens once it has chumped a creature
Obviously, this necessitates playing this card with as few cards in hand as possible, while hoping your opponent is holding at least five cards in theirs
There are a few other ways Wizards could balance this kind of mechanic besides a turn delay
Licia, Sanguine Tribune [Best Vampire Commander for Lifegain Builds] If youre ranking the best Vampire Commanders MTG for lifegain builds, Licia easily claims a top spot