arceus break pokemon card Trading Game 80 Discard all Energy attached to Arceus Pokémon BREAK (TCG) - Bulbapedia,

Derevi, Empyrial Tactician Rarity: Mythic Rare TYPE: Legendary Creature SUBTYPE: Bird Wizard CMC: 3 Mana cost: USD: $8.37 EUR: 9.13 TIX: 7.78 EDHREC RANK: 2844 (2/3) Flying When Derevi enters and whenever a creature you control deals combat damage to a player, you may tap or untap target permanent

My guess is that Amulet of Safekeeping is R&Ds attempt to try and answer the question of how to ensure that Modern players can sideboard against multiple strategies at once so that your progression though a large Modern tournament is less matchup dependent

You dont have to use these spells to eliminate opponents or end the game, either

Dionus, Elvish Archdruid is an uncommon legendary creature from Foundations Jumpstart, one that has a rather unique ability for your next Elf Kindred deck