how to use pendulum cards in yugioh Yu-gi-oh! TCG Zone: Summon Yugioh Rule Book | How

Heal 100 damage from each of your Benched Pokmon

According to official rulings, this "ability includes permanent spells (Artifacts, Creatures, Enchantments, and Planeswalkers), not just Instant and Sorcery spells." Against a mono-color deck, Iona offers a devastating blow

Just like in the last set (Great Encounters), they may very well be quite a random selection

For reference, before the tax was added to the Companion mechanic, as long as you upheld the deckbuilding restriction that the Companion requested, you could add your Companion from the Companion zone (your sideboard) to your hand at no cost essentially allowing you to begin the game with a guaranteed extra card in hand