(Generic)Isekai/Dungeon Test concepts: Virtual Booster

Blood-Soaked Battlefield    R  Land – Plains (: Add .) Whenever a creature an opponent controls leaves the battlefield, Blood-Soaked Battlefield becomes a Swamp and a Mountain until end of turn.	Bulbous Swamp Crone    U  Creature – Plant Hag When Bulbous Swamp Crone enters the battlefield, gain 3 life. When Bulbous Swamp Crone dies, put a +1/+1 counter on target creature you control. If that a creature is a Boss, put two +1/+1 counters on it instead. 5/5	Extra Health Bar    U  Instant Until end of turn, double the toughness of target creature you control. If that creature is a Boss, it becomes immune to deathtouch and can't be targeted by spells or abilities your opponents control until end of turn.	Dark Elf Brawn Shaper    U  Creature – Elf Shaman : Add . If this mana is spent casting a creature spell, that creature enters the battlefield with an additional +1/+1 counter. 1/2	Hound of the Fourth Hell    C  Creature – Devil Hound When Hound of the Fourth Hell enters the battlefield, Hound of the Fourth Hell deals damage equal to its power to target creature with a mana value of 3 or less. : Hound of the Fourth Hell gains menace until end of turn. 3/3
Isd-Nahglam's Courrier    C  Creature – Merfolk Minion Flash When Isd-Nahglam's Courrier enters the battlefield, untap target Boss you control. , Sacrifice Isd-Nahglam's Courrier: Untap target Boss. 0/2	Preshayja's Gambit    C  Instant Put a +1/+1 counter on up to one target creature you control. Until end of turn, that creature gains "Remove a counter: Destroy target creature blocking or being blocked by this creature."	Reapers Guild Coin Master    C  Creature – Orc Assassin When Reapers Guild Coin Master enters the battlefield, you may sacrifice any number of Treasures. If you do, target creature gets -X/-X until end of turn, where X is the number of Treasures sacrificed this way. 4/6	Curse of the Vampire Bat    C  Enchantment – Aura Flash, Reward (If a creature an opponent controls left the battlefield this turn, you may cast this spell for its reward cost..) Enchant creature you control Enchanted creature has flying and lifelink. At the beginning of your endstep, if you didn't gain life this turn, sacrifice the enchanted creature.	Noxious Commoner    C  Creature – Elf Peasant Flash, deathtouch Mor Gaush spreads a message of disease. No one needs to be faithful to carry that message. 2/2
Arnz, Horned Obnoxiousness    C  Legendary Creature – Rhino Boss Whenever Arnz, Horned Obnoxiousness deals combat damage to a player, create a 1/1 green Saproling token. Tier 1 (Tier 1 creatures aren't legendary as long as you control a Tier 2 or higher creature.) ,: Return a basic land or Lair from your graveyard to the battlefield tapped and put a reach counter on up to one target creature. 3/5	Infamous Hellfire    C  Sorcery Deal 3+X damage to 1+X targets, where, X is the number of cards in your graveyard named Infamous Hellfire.	Bite of Emptiness    C  Sorcery Each opponent mills three cards. Each opponent loses life equal to the highest mana value among cards that player milled this way. You gain life equal to the greatest amount of life lost this way. They say the rats in Dualor feed off of not just flesh, but memories, happiness, and sorrow that are one's identity.	Coiling Eel Scepter    C  Artifact – Equipment Equipped creature gets +0/+2 and has ": Add . Spend this mana only to cast instants or pay for equip costs." Equip -	Island    B  Basic Land – Island

Blood-Soaked Battlefield (rare)
Bulbous Swamp Crone (uncommon)
Extra Health Bar (uncommon)
Dark Elf Brawn Shaper (uncommon)
Hound of the Fourth Hell (common)
Isd-Nahglam's Courrier (common)
Preshayja's Gambit (common)
Reapers Guild Coin Master (common)
Curse of the Vampire Bat (common)
Noxious Commoner (common)
Arnz, Horned Obnoxiousness (common)
Infamous Hellfire (common)
Bite of Emptiness (common)
Coiling Eel Scepter (common)
Island (basic)