(Generic)Isekai/Dungeon Test concepts: Virtual Booster

Plotting Peace    R  Enchantment Each player may skip their combat phase. Whenever a player skips their combat phase this way, each player draws a card. Floor bosses rarely fight each other, for the consequences of combat are often to great to determine the value of any battle or war that could be won.	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	Cheline, Light Elf Gate Keeper    U  Legendary Creature – Elf Cleric Boss Vigilance Tier 2 (Tier 2 creatures aren't legendary as long as you control a Tier 3 or higher creature.) At the beginning of your endstep, gain 1 life for each untapped creature you control. At the beginning of your upkeep, if you have more life than each opponent, distribute up to two +1/+1 counters among one or two target creatures. 3/4	Decoy Illusion    U  Instant Create a 0/3 blue Illusion token with "Spells and abilities that target creatures cost more unless they target this creature" and "At the beginning of the next endstep, sacrifice this creature."	Underworld Vaguard    C  Creature – Demon Flying, haste If was spent casting Underworld Vaguard, create two 1/1 red Devil tokens with "When this creature dies, deal 1 damage to any target. 3/2
Scheming Pirate    C  Creature – Goblin Pirate Scheming Pirate enters the battlefield with a first strike and a haste counter unless an opponent has you create a Treasure token instead. 2/3	Fourth-Floor Ambush Greeter    C  Creature – Elemental Giant When Fourth-Floor Ambush Greeter enters the battlefield, you may sacrifice a Lair. If you do, put a +1/+1 counter, a menace counter, and a first strike counter on each Boss you control. 6/6	Duties Advocate    C  Creature – Elf Cleric Whenever a creature you control becomes enchanted, put a vigilance counter on that creature. 2/1	Rejection Invocation    C  Instant Counter target spell. If was spent casting Rejection Invocation, that player can't cast spells with the same name as that spell until your next turn.	Hinterland Hell Raiser    C  Creature – Human Barbarian Hinterland Hell Raiser enters the battlefield with a trample and a reach counter if an artifact card you don't own entered a player's graveyard this turn. 2/2
Displacement Step    C  Instant Target creature you control phases out until your next upkeep. "I'm not there, well "there" is a loaded term." -Isvanna of the Seven-Thousand Spells	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.	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	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	Swamp    B  Basic Land – Swamp

Plotting Peace (rare)
Ancient Muck Elemental (uncommon)
Cheline, Light Elf Gate Keeper (uncommon)
Decoy Illusion (uncommon)
Underworld Vaguard (common)
Scheming Pirate (common)
Fourth-Floor Ambush Greeter (common)
Duties Advocate (common)
Rejection Invocation (common)
Hinterland Hell Raiser (common)
Displacement Step (common)
Scout's Smoke Trick (common)
Pfeilso, Spreading Slime (common)
Kerlinn, Inventorist (common)
Swamp (basic)