This was a deck that was all land, great lands like Thawing Glaciers, mana, mana ramping with High Tide itself, permission for defense, and card drawing
Magic cards that provide massive amounts of colorless mana are always hot commodities and this eminently scarce Weatherlight nonbasic clearly fits that bill by delivering a staggering to your mana pool
Great since often these make 1/1 dorks
Each Secret Lair drop features a different hero with a mix of original cards and reprints from past sets with new art and titles
the old multi-coloured lands from Ice Age are a cycle that still see a lot of play now in multi-coloured decks, with the cycle introduced here being colloquially called the 'pain lands' because they deal 1 damage if you use them to make coloured mana
Casting it as a sorcery makes a pair of flying 4/4 white Angel Warriors and grants your non-Angel creatures immunity to destruction until you start your next turn