(Generic)Isekai/Dungeon Test concepts: Virtual Booster

Radiance Halo    R  Enchantment Enchanted creatures you control get +3/+3. : If Radiance Halo isn't an Aura, attach Radiance Halo to a creature until end of turn and Radiance Halo becomes an Aura until end of turn. When Radiance Halo enchants a Boss this way, gain 4 life. Discard an enchantment card: Return Radiance Halo from your graveyard to your hand.	Jvo-Mak, Dream Schemer    U  Legendary Creature – Serpent Boss Tier 2 (Tier 2 creatures aren't legendary as long as you control a Tier 3 or higher creature.) Whenever a Lair enters the battlefield under your control, target opponent chooses 1– ● You draw two cards and discard a card. ●Jvo-Mak, Dream Schemer can't be blocked until end of turn. 4/4	Devil-Fire Conflict    U  Sorcery Target creature fights another target creature. Each of those creatures deals 2 damage to the other creature's controller.	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.	Keeper of the Dangliss Glade    C  Creature – Troll Druid When Keeper of the Dangliss Glade enters the battlefield, you may return a Forest from your graveyard to your hand. If you control a Boss, you may return a Lair from your graveyard to your hand instead. ,: Keeper of the Dangliss Glade fights target creature 5/5
Curse of Howling    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 All creature able to block the enchanted creature do so. At the beginning of your endstep, if the enchanted didn't attack, exile two lands you control until the beginning of your next endstep.	Vivant Flare-Crest    C  Creature – Basilisk When Vivant Flare-Crest enters the battlefield, target Boss you control gains deathtouch and vigilance until end of turn. Flare-Crests are fierce monsters, but they can recognize heroic power. 5/2	Holy Moon's Favor    C  Instant Target creature gets +1/+2 and has Ward until end of turn. If target creature is a Boss, it gains lifelink until end of turn.	Bone-Breaker Hammer    C  Artifact – Equipment Reward (If a creature an opponent controls left the battlefield this turn, you may cast this spell for its reward cost..) Equipped creature gets +2/+0 and has trample. Equip	Not Quite Free    C  Instant Counter target spell that was cast for its reward cost unless that player pays . "I might not be spending money, but it's still a paywall." -Eshmoon
Migraine Halo    C  Enchantment – Aura Curse Enchant player Whenever the enchanted player is dealt combat damage, that player mills two cards unless they lose 1 life instead.	Barbs of Pain    C  Enchantment – Aura Enchant creature Whenever enchanted creature attacks, nonmana abilities of permanents opponents control cost an additional 2 life to activate until end of turn.	Rupture the Future    C  Sorcery Target opponent discards two cards. Create a Treasure token for each Boss discarded this way.	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	Plains    B  Basic Land – Plains

Radiance Halo (rare)
Jvo-Mak, Dream Schemer (uncommon)
Devil-Fire Conflict (uncommon)
Extra Health Bar (uncommon)
Keeper of the Dangliss Glade (common)
Curse of Howling (common)
Vivant Flare-Crest (common)
Holy Moon's Favor (common)
Bone-Breaker Hammer (common)
Not Quite Free (common)
Migraine Halo (common)
Barbs of Pain (common)
Rupture the Future (common)
Knife Tyrant Crab (common)
Plains (basic)