Archfiend's Vessel [Core Set 2021] Elf Artificer you may put a +1/+1

you may put a +1/+1 counter on Thraximundar

Set: Innistrad: Crimson Vow Type: Legendary Creature — Slug Horror Rarity: Mythic Cost: {5}{B}{B} At the beginning of each end step

Set: The Lord of the Rings: Tales of Middle-Earth Type: Artifact Creature — Scarecrow Rarity: Common Cost: {2} Defender

You gain 1 life for each {S} spent to cast this spell

As long as there are five or more soul counters on Obscura Ascendancy

Archfiend's Vessel [Core Set 2021] Elf Artificer you may put a +1/+1Set: Core Set 2021 Type: Creature Human Cleric Rarity: Uncommon Cost: {B} Lifelink (Damage dealt by this creature also causes you to gain that much life.) When Archfiend's Vessel enters the battlefield, if it entered from your graveyard or you cast it from your graveyard, exile it. If you do, create a 5 5 black Demon creature token with flying.