(Generic)Isekai/Dungeon Test concepts: Virtual Booster

Koigyat, Blood Maw    R  Legendary Creature – Dragon Boss Flying haste Tier 3 (Tier 3 creatures aren't legendary as long as you control a Tier 4 creature. Creature spells you cast with Tier 1 cost less to cast.) At the beginning of your endstep, each opponent who didn't lose life this turn loses 3 life. At the beginning of your endstep, discard a card, then draw a card for each opponent who didn't lose life this turn. 4/5	Galn-Wa's Blessing    U  Enchantment – Aura Enchant creature Whenever a nonbasic land becomes tapped, enchanted creature gets +1/+1 until end of turn. Sacrifice a Lair: Enchanted creature gains Ward until end of turn.	Third-Floor Gatekeeper    U  Creature – Cerberus Menace Whenever Third-Floor Gatekeeper attacks, Third-Floor Gatekeeper gets +X/+0 until end of turn, where X is the number of Bosses you control. 3/5	Demon Lord of Sadness    U  Creature – Demon Flying At the beginning of your upkeep, each player loses 3 life unless that player has each creature they control get -1/-1 until end of turn. 5/5	Lament of the Lonely    C  Instant Cast Lament of the Lonely only if you control exactly one creature. Draw two cards, lose two life, and create two tapped Treasure tokens.
Scout's Smoke Trick    C  Instant Prevent all combat damage that would be dealt this turn. If you control at least two tapped creatures, Scry 1.	Glopsci, Tentacles in Everything    C  Legendary Creature – Octopus Boss Whenever Glopsci, Tentacles in Everything deals combat damage to a player, tap target nonland permanent that player controls. That permanent doesn't untap during its controller's next untap step. Tier 1 (Tier 1 creatures aren't legendary as long as you control a Tier 2 or higher creature.) ,: Return target tapped nonland permanent to its owner's hand. 3/5	Kerlinn, Inventorist    C  Legendary Creature – Orc Boss Tier 1 (Tier 1 creatures aren't legendary as long as you control a Tier 2 or higher creature.) At the beginning of your upkeep, you may sacrifice an artifact. If you do, draw a card, each opponent loses 2 life, and you gain 2 life. 2/2	Psychopomp Punisher    C  Creature – Angel Flying At the beginning of your endstep, if you lost life this turn, target opponent exiles their graveyard. 3/3	Adventurercatcher    C  Creature – Plant Whenever a land enters the battlefield under your control, gain 1 life. If a Lair entered the battlefield, Adventurercatcher gets +1/+0 until end of turn. 0/1
Fanlaed, Raised by Beasts    C  Legendary Creature – Elf Wizard Boss Tier 1 (Tier 1 creatures aren't legendary as long as you control a Tier 2 or higher creature.) During your combat phase, instants you cast cost less for each untapped creature you control. 2/2	Tide Reader    C  Creature – Merfolk Wizard When Tide Reader enters the battlefield, draw three cards. 4/6	Duties Advocate    C  Creature – Elf Cleric Whenever a creature you control becomes enchanted, put a vigilance counter on that creature. 2/1	Blood-Sworn Knight    C  Creature – Vampire Knight Whenever an opponent casts a spell during the combat phase, Blood-Sworn Knight gets +1/+0 and gains first strike until end of turn. 0/3	Forest    B  Basic Land – Forest

Koigyat, Blood Maw (rare)
Galn-Wa's Blessing (uncommon)
Third-Floor Gatekeeper (uncommon)
Demon Lord of Sadness (uncommon)
Lament of the Lonely (common)
Scout's Smoke Trick (common)
Glopsci, Tentacles in Everything (common)
Kerlinn, Inventorist (common)
Psychopomp Punisher (common)
Adventurercatcher (common)
Fanlaed, Raised by Beasts (common)
Tide Reader (common)
Duties Advocate (common)
Blood-Sworn Knight (common)
Forest (basic)