Estrid's Invocation is a rare Enchantment card from Commander 2018 (C18), collector number 8. Current market price: $1.00, TCGplayer market prices via Scryfall.
You may have this enchantment enter as a copy of an enchantment you control, except it has "At the beginning of your upkeep, you may exile this enchantment. If you do, return it to the battlefield under its owner's control."