Overall, it's not a crazy reward for unlocking four very difficult to obtain pieces of card art, but it's certainly setting you up for future pack openings and trades
For any card printed since 1998, you have two clear indicators: The Set Symbol Color: The most immediate visual cue is the expansion symbol, located on the right side of the card, between the art and the text box
Id pair it up with Sword Coast Sailor, then use buffs like Sword of Light and Shadow and other favorite Equipment in order to both get it through rough combats and tick up what he goads
Surge of Salvation Another piece of protection to add to the pile, Surge of Salvation provides another interesting option for keeping our Elves safe
Your winning line of play is simply any sequence of sufficiently efficient, self-replacing spells, followed by a storm spell
Film thickness and material: Thicker isn't automatically better, but premium card sleeves tend to land around 90-110 microns for outer sleeves