(Generic)Isekai/Dungeon Test concepts: Virtual Booster

Tarrush, Maze King    R  Legendary Creature – Minotaur Boss Vigilance, reach, menace 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.) Whenever a creature dealt damage by Tarrush, Maze King dies, that creature's controller exiles the top card of their library. Until the beginning of your next endstep, you may play that card. When you play a card this way, draw a card. 8/8	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	Dealer's Hand Devil    U  Creature – Devil When Dealer's Hand Devil enters the battlefield, you may discard a card and draw two cards. If a card with reward was discarded this way, exile it. Until end of turn, you may cast spells exiled this way and you may spend mana as though it were mana of any color to cast those spells. 2/2	Fourth-Floor Groveler    U  Creature – God Peasant Exile two cards from your hand: Fourth-Floor Groveler gains indestructible until end of turn. When Fourth-Floor Groveler enters the battlefield, exile target nonland card with a mana value of 4 or less. The Godfolk only live on the fourth floor, and despite their immense power, they all humbly submit to Jhimos, their ruler. 5/5	Merfolk Looter    C  Creature – Merfolk Rogue : Draw a card, then discard a card. The Sea of Kalth is filled with treasures, but few except the merfolk risk the treacherous waters. 1/1
Ashell and Gruzmi, Heralds of Kairu    C  Legendary Creature – Elf Goblin Boss Tier 1 (Tier 1 creatures aren't legendary as long as you control a Tier 2 or higher creature.) : Ashell and Gruzmi, Heralds of Kairu gains first strike until end of turn. : Ashell and Gruzmi gains deathtouch until end of turn. At the beginning of your endstep, if Ashell and Gruzmi has first strike and deathtouch, sacrifice it. When Ashell and Gruzmi is sacrificed this way you may cast a Boss from your hand as if it had flash for less. 4/4	Wind-Palm Green Belt    C  Creature – Human Monk Whenever you cast an instant or sorcery spell you may pay . If you do, tap target creature. Zialk is a master of every style, but many of his students have yet to master one. 2/1	Lair Keeper’s Service    C  Enchantment – Aura Enchant creature Enchanted creature untaps at the beginning of each untap step and has “: Untap target Lair.”	Feast on Foes    C  Enchantment Whenever a creature you don't control dies, create a Food token. "Cerberus, angel, sphinx, they all taste the same covered in pain pepper sauce." -Driel, the Body Gardener	Luck-Burster Bolt    C  Sorcery When you cast Luck-Burster Bolt, if you control a tier 2 or higher creature, you pay . If you do, destroy target artifact or enchantment. Deal 3 damage to any target.
Runner Virus Zombie    C  Creature – Zombie Rogue Flash Until the beginning of your next endstep, you may cast the next creature spell you cast as if it has flash. 1/1	Haldim Great Rat    C  Creature – Rat ,: Exile target creature from an opponent's graveyard and put a +1/+1 counter on Haldim Great Rat. 2/1	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."	Steal From the Skies    C  Instant Until end of turn target creature gains hexproof and "when this creature deals combat damage to a creature with flying, draw a card."	Island    B  Basic Land – Island

Tarrush, Maze King (rare)
Jyale Bog Monsquito (uncommon)
Dealer's Hand Devil (uncommon)
Fourth-Floor Groveler (uncommon)
Merfolk Looter (common)
Ashell and Gruzmi, Heralds of Kairu (common)
Wind-Palm Green Belt (common)
Lair Keeper’s Service (common)
Feast on Foes (common)
Luck-Burster Bolt (common)
Runner Virus Zombie (common)
Haldim Great Rat (common)
Preshayja's Gambit (common)
Steal From the Skies (common)
Island (basic)