Unless theyre running Helm of the Host, which safely creates a nonlegendary copy of the equipped creature that you can swing at a second player
40% of the Nath decks in the EDHREC database running Eternal Witness aren't running Down // Dirty
Regal Caracal (Secret Lair) There are a lot of cute cat cards, so you know its significant that Andrea Radecks Regal Caracal from the OMG Kitties
This is a given, but a common use of creatures with Warp will be to put them on the board to be tapped for the Station ability of a Spacecraft or Planet
Chriss Sarulf, Realm Eater Correction: Bens not the only one playing a Commander from Kaldheim
So long as you keep cards that can remove damage from these characters on standby (like Dinglehopper, Hakuna Matata, or Cinderella, Gentle and Kind) you should be able to keep the gravy train rolling until victory is yours