(Generic)Isekai/Dungeon Test concepts: Virtual Booster

Boss's Medallion    R  Artifact Reward (If a creature an opponent controls left the battlefield this turn, you may cast this spell for its reward cost..) : Add one mana of any color. ,: Add two mana of any color combination from among the colors of Bosses you control.	Ancient Muck Elemental    U  Creature – Elemental Flash At the beginning of your end step, up to one target tapped nonlegendary creature an opponent controls gets -X/-X until end of turn, where C is the number of tapped creatures you control. 5/5	Black-Water Skulker    U  Creature – Fish Horror Whenever Black-Water Skulker deals combat damage to a player, if that player discard a card this turn, that player loses 2 life and you may scry 2. 1/1	Jyale Bog Monsquito    U  Creature – Insect Flying When Jyale Bog Monsquito attacks, you may pay 3 life. If you do, each opponent loses 1 life and sacrifices a token they control. 1/3	Lair of the Impatient Ones    C  Land – Lair Lair of the Impatient Ones enters the battlefield tapped. : Add or . ,: Each creature you control with a Tier gets +1/+1 until end of turn.
Dzini's Recruit    C  Creature – Goblin Warrior Whenever Dzini's Recruit attacks, if you don't control 3 attacking creatures, create a 1/1 red Golbin token tapped and attacking. Many goblins don't care for their own lives and die violently. Dzini added apathy to that lack of survival. 3/3	Knife Tyrant Crab    C  Creature – Crab You may spend mana as though it were to pay for equip costs that target Knife Tyrant Crab. 4/4	Foul Rotter    C  Creature – Zombie Whenever Foul Rotter or another Zombie enters the battlefield, up to one target creature you don't control gets -1/-1 until end of turn. You can't target a creature with this ability more than once each turn. 2/2	Kalthan Recruit    C  Creature – Merfolk Soldier Whenever an artifact enters the battlefield under your control, if you paid its reward cost this turn, create a tapped treasure token. 1/2	Lair Keeper’s Service    C  Enchantment – Aura Enchant creature Enchanted creature untaps at the beginning of each untap step and has “: Untap target Lair.”
Driel, the Body Gardener    C  Legendary Creature – Elf Druid Boss Trample Tier 1 (Tier 1 creatures aren't legendary as long as you control a Tier 2 or higher creature.) Whenever Driel, the Body Gardener or another creature dies, you may pay . If you do, create a 1/1 green Saproling token. 4/4	Doquirl Dungeon Minotaur    C  Creature – Minotaur Minion Haste ,: Deal 2 damage to target creature. This ability costs less to activate if you control a Boss. The minotaurs charge on their master's command, and won't stop their attack until either they or their target dies. 2/2	Pfeilso, Spreading Slime    C  Legendary Creature – Ooze Boss Hexproof Tier 1 (Tier 1 creatures aren't legendary as long as you control a Tier 2 or higher creature.) When Pfeilso, Spreading Slime dies, return a random instant or sorcery card from your graveyard to your hand. You gain life equal to that card's mana value. 2/2	Duties Advocate    C  Creature – Elf Cleric Whenever a creature you control becomes enchanted, put a vigilance counter on that creature. 2/1	Mountain    B  Basic Land – Mountain

Boss's Medallion (rare)
Ancient Muck Elemental (uncommon)
Black-Water Skulker (uncommon)
Jyale Bog Monsquito (uncommon)
Lair of the Impatient Ones (common)
Dzini's Recruit (common)
Knife Tyrant Crab (common)
Foul Rotter (common)
Kalthan Recruit (common)
Lair Keeper’s Service (common)
Driel, the Body Gardener (common)
Doquirl Dungeon Minotaur (common)
Pfeilso, Spreading Slime (common)
Duties Advocate (common)
Mountain (basic)