It seems the effect on Alabaster Host Intercessor has become evergreen on at least one white spell in each major set where an opposing creature can be removed as long as your creature stays on the battlefield
It's easy to cast, only needing two generic mana along with one White

1 Graveyard Hate : Tranquil Frillback 5 Tutors : Huatli, Poet of Unity, Forerunner of the Empire, Savage Order, Gishath, Suns Avatar (kinda), Pantlaza, Sun-Favored (kinda) 5 Protection : Hulking Raptor (self-protection), Temple Altisaur, Carnage Tyrant (self-protection), Agonasaur Rex, Rhythm of the Wild (counterspells) 11 Card Draw : Runic Armasaur, Curious Altisaur, Ripjaw Raptor, Earthshaker Dreadmaw, Etali, Primal Storm (card advantage), Regal Behemoth, Kogla and Yidaro (1/2), Etali, Primal Conqueror (card advantage), Agonasaur Rex (1/2), Colossal Majesty, Garruks Uprising, Vaultborn Tyrant 16 Finishers/ Surprise /Alternate win conditions : Huatli, Poet of Unity, Dinosaurs on a Spaceship, Kogla and Yidaro, Etali, Primal Conqueror, Ghalta and Mavren, Rampaging Brontodon, Silverclad Ferocidons, Ghalta, Stampede Tyrant, Gishath, Suns Avatar, Triceraton Commander, Apex Altisaur, Zacama, Primal Calamity, Ghalta, Primal Hunger, Pyrohemia, Sawhorn Nemesis, Agonasaur Rex As we see from the comparative analysis, the rates per category are very good

Check out our other lists of the most highly sought after cards in specific Disney Lorcana sets, such as Archazias Island and Azurite Sea !
Finally, a hard plastic top loader that can hold a sleeved or even double-sleeved card is optimal when mailing cards or protecting cards of value