(Generic)Isekai/Dungeon Test concepts: Virtual Booster

Harvest Scythe    R  Artifact – Equipment Whenever the equipped creature attacks, it gets +X+0 until end of turn, where X is the number of nonbasic lands the defending player controls unless that player has you create two Treasure tokens instead. Equip- Tap three untapped basic lands	Dark Scheme    U  Instant As an additional cost to cast Dark Scheme, exile a creature you control. Counter target creature spell. Then, choose one. If you control a Boss and a Lair, you may choose both. ● Return the exiled creature to the battlefield. ●Target creature gets -X/-X, where X was the exiled creature's power.	Blessing of Caustic Slime    U  Enchantment – Aura Enchant creature At the beginning of your endstep, remove any number of counters from the enchanted creature. For each counter removed this way, you may destroy target artifact or enchantment.	Astral Attendance    U  Instant Create a token copy of target creature you control with "Sacrifice this creature at the beginning of each endstep". Nontoken creatures with that name loses all abilities until end of turn.	Royal Flight Instructor    C  Creature – Kor Knight Flying At the beginning of your endstep, if Royal Flight Instructor dealt combat damage to a player this turn, you may put a Flying counter on up to one target legendary creature you control. 1/1
Rumblo's Armorer    C  Creature – Goblin Minion Haste When Rumblo's Armorer dies, you may attach equipment at instant speed until end of turn. "A spear? We'll need these shields, and a hammer to break the shaft." -Rumblo, Second Floor Boss 1/1	Secret Enemy    C  Creature – Beast Barbarian Flash Secret Enemy can't be countered by spells or abilities. If a creature you control left the battlefield this turn, Secret Enemy costs less to cast. 3/3	Long-Feather Angel    C  Creature – Angel Flying ,: Tap target creature an opponent controls. There is no hope of escaping Hwalch's Dungeon. 2/3	Grasp of Death    C  Instant Grasp of Death costs less if Grasp of Death targets a nonlegendary creature. Destroy target creature.	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
Divine Tentacles    C  Creature – Angel Squid Flying When Divine Tentacles enters the battlefield, exile target tapped permanent until end of turn Squids fly up from below the Sho Belarsh ocean should any try and ride the waves to the second floor. 1/3	Frilled Wonder, Sol-Allain    C  Legendary Creature – Lizard Boss Tier 1 (Tier 1 creatures aren't legendary as long as you control a Tier 2 or higher creature.) : Frilled Wonder, Sol-Allain gains vigilance until end of turn. ,: Put a +1/+1 counter on another target creature. When Frilled Wonder dies, if you control another creature with one or more +1/+1 counters, you may cast a Boss from your hand as if it had flash. If you do, that boss enters with two +1/+1 counters. 4/4	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	Lair of the Hateful    C  Land – Lair Lair of the Hateful enters the battlefield tapped. : Add or . ,: Each creature you control with a Tier gets +1/+1 until end of turn.	Plains    B  Basic Land – Plains

Harvest Scythe (rare)
Dark Scheme (uncommon)
Blessing of Caustic Slime (uncommon)
Astral Attendance (uncommon)
Royal Flight Instructor (common)
Rumblo's Armorer (common)
Secret Enemy (common)
Long-Feather Angel (common)
Grasp of Death (common)
Merfolk Looter (common)
Divine Tentacles (common)
Frilled Wonder, Sol-Allain (common)
Adventurercatcher (common)
Lair of the Hateful (common)
Plains (basic)