If the equipped creature is dealt lethal damage at the same time that you gain life, it will die before Excalibur II's first ability would resolve
Usually, you want to run two of each, which means these account for eight out of the 20 cards in your deck
Prerelease pack - A box sold at prerelease events, with six Play boosters, one promo card (a foil Rare or Mythic Rare stamped with the year), a deck box, an Arena code, and a spindown die with the set symbol
The cards from Triplet Beat, Snow Hazard, and Clay Burst will combine to form our Paldea Evolved set on June 9th
This is the only process I can think of that will guarantee that you're not missing the card you're looking for, as long as you choose your search parameters sensibly - for example, the above search won't yield Terrifying Presence as a result.
Whether you're pushing toward that final Prize card in a clean sweep or about to make an astonishing comeback, Pokmon ex can help you battle at your best