Approach of the Second Sun (Japanese Etched Foil) [Strixhaven Mystical Archive] Junior Series Europe Splice onto Arcane {1}{R} (As

Splice onto Arcane {1}{R} (As you cast an Arcane spell

{T}: Search your library for a permanent card

Set: Universal Onslaught Rarity: Iconic Attack Rare Color: Green Energy color cost: 1(G) Card type: Extra [Activate:Battle] If your Leader Card is green : Choose up to 1 of your Leader Cards or Battle Cards and it gets +15000 power for the duration of the battle

Set: Mirrodin Type: Enchantment Rare Cost: {3}{R}{R} Whenever an artifact

But where is the source

Approach of the Second Sun (Japanese Etched Foil) [Strixhaven Mystical Archive] Junior Series Europe Splice onto Arcane {1}{R} (AsSet: Strixhaven Mystical Archive Type: Sorcery Rarity: Mythic Cost: {6}{W} If Approach of the Second Sun was cast from your hand and you cast another spell named Approach of the Second Sun this game, you win the game. Otherwise, put Approach of the Second Sun into its owner's library sevent from the top and you gain 7 life.