There are three card types in Lorcana
Mox Opal needs you to be all-in on artifacts (or equipment), and running artifact lands
Flamekin Harbinger Flamekin Harbinger is another typal tool that sets up the top card of your library rather than actually putting a card in hand, but its only 1 mana to cast so it gives you some wiggle room to draw and cast that card
And a bear is a 2/2 creature with few or no abilities, at least none that matter outside of combat (the one druid bear obviously being the exception that proves the rule)
Thanks to affinity for artifacts, it often costs less than 4 mana, especially in lists packed with cheap artifacts like Ichor Wellspring or Chromatic Star
Yorion, Sky Nomad is still legal in the Pioneer format and Keruga, the Microsage and Obosh, the Preypiercer see some Modern and Pioneer play