Number 1 could work since look protected towards abuses, unlike the other 2.
P.S. Looking at the title I thought at borrowing pokemons :); like I can lend 1-2 lvl 30 Golems to another Valor before the raid so we increase our team damage :). Or some maxed Vapes that don't make the cut in my team vs. Moltres or Tyra but will be stars for many other teams.