Secret Lair Drop Series: Summer Superdrop

The Summer Superdrop is a series of five drops in the Secret Lair product range and a continuation of the alternate art Secret Lair Drop Series. It became available for purchase from the Wizards of the Coast webshop secretlair.wizards.com on June 1, 2020. Each separate drop lasted for 24 hours. A bundle became available for two weeks to guarantee all drops.

Description
Two weeks before Secret Lair: Ultimate Edition went on sale at WPN stores, Wizards of the Coast ran a Secret Lair superdrop much like they did in December 2019. Unlike with the previous Superdrop there was no discount for the bundle. Instead, if you purchased the bundle that combined each drop, you received one random Ultimate Edition fetch land for each bundle you purchased. Additionally, ordering a drop got you codes for digital purchases in MTG Arena and Magic Online. You'd get the cards themselves in Magic Online, but since most of the cards in this series didn't exist in Arena, you would instead get sleeves as “expressions of the drop’s theme.”

Drops

 * Summer Superdrop (all five drops) - 06/01-06/15, $169.95
 * Full Sleeves: The Tattoo Pack (Old school tattoos) - 06/01, $29.99
 * Can You Feel with a Heart of Steel? (Mechs) - 06/02, $39.99
 * The Path Not Traveled (Alternate reality planeswalkers) - 06/03, $39.99
 * Mountain, Go (Lightning Bolts) - 06/08, $29.99
 * Ornithological Studies (Classic Birds) - 06/09, $29.99

Distribution of stained-glass planeswalkers
As an extra, each drop contains one of the 36 War of the Spark planeswalkers, featuring the stained-glass artwork first featured in the War of the Spark teaser.

25 of the 36 stained-glass planeswalkers appear with these five drops. The metal planeswalker Karn appropriately appears with Can You Feel With a Heart of Steel and the electromancer Ral Zarek with Mountain, Go. Ornithological Studies features the three flying planeswalkers (Ugin, Bolas and Ob Nixilis) and the four planeswalkers featured in The Path Not Traveled (Ajani, Domri, Tamiyo and Vraska) are accompanied by their stained-glass counterparts. Some of the planeswalkers appearing with Full Sleeves: the Tattoo Pack clearly have tattoos (Liliana, Jace, Nissa) but the other choices are less explainable (unless they have tattoos in hidden places).