You may have Estrid's Invocation enter the battlefield 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."
Enchanters add layer upon layer of complexity to the world around them.
NM-Mint - $6.30
Lightly Played - $6.00
Moderately Played - $5.70
Heavily Played - $5.00
Damaged - $4.10
NM-Mint Non English - $6.30
Lightly Played Non English - $6.00
Moderately Played Non English - $5.70
Heavily Played Non English - $5.00
Damaged Non English - $4.10