(Generic)Isekai/Dungeon Test concepts: Virtual Booster

Joi'Mkah of the Flash Forge    R  Legendary Creature – Naga Artificer Boss 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 nontoken artifact enters the battlefield under your control, create a a token copy of that artifact an untap it. If it's a creature it gains haste. Sacrifice that token at the beginning of the next endstep. 5/5	Anti-Mystic Barrier    U  Instant Counter target noncreature spell. If you control a blue Boss, each opponent reveals their hand. If you control a white Boss, gain life equal to mana value of the spell countered this way.	Flame-Breath Cone    U  Instant Flame-Breath Cone costs less if you control a red Boss. Deal 3 damage to target creature, 2 damage to another target creature, and 1 damage to another target creature.	Flashfire Sorcerer    U  Creature – Efreet Wizard Flash When Flashfire Sorcerer enters the battlefield, you may deal X damage to target creature, where X is the mana value of target instant or sorcery. 3/4	Lightning Centipede    C  Creature – Insect , Sacrifice Lightning Centipede: Deal 2 damage to target creature. 3/1
Mekocz, Who'll Eat Everything    C  Legendary Creature – Wolf Boss Vigilance Tier 1 (Tier 1 creatures aren't legendary as long as you control a Tier 2 or higher creature.) : Mekocz, Who'll Eat Everything gets +3/+3 until end of turn. 2/2	Signature Spell-Slice    C  Instant If Signature Spell-Slice targets a Boss, you may pay an additional . Destroy target attacking creature. If you paid an additional , gain 5 life and create a 1/1 white Soldier token.	Driel's Herald    C  Creature – Hydra Driel's Herald enters the battlefield with a +1/+1 counter on it for each Boss you control. Remove a +1/+1 counter from Driel's Herald: Driel's Herald gains indestructible until end of turn. 0/0	Plans Forseen    C  Instant Reward (If a creature an opponent controls left the battlefield this turn, you may cast this spell for its reward cost..) Counter target spell. If a creature spell was countered this way, tap up to two target creatures that player controls. Otherwise, scry 2.	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
Sanguine Dance    C  Sorcery Each player sacrifices a nonlegendary creature and gains life equal to the total toughness of all creatures sacrificed this way.	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	Slag Samurai    C  Artifact Creature – Elemental Samurai Reward (If a creature an opponent controls left the battlefield this turn, you may cast this spell for its reward cost..) First strike Whenever another artifact enters the battlefield under your control, Slag Samurai gets +1/+0 until end of turn. 3/1	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.	Forest    B  Basic Land – Forest

Joi'Mkah of the Flash Forge (rare)
Anti-Mystic Barrier (uncommon)
Flame-Breath Cone (uncommon)
Flashfire Sorcerer (uncommon)
Lightning Centipede (common)
Mekocz, Who'll Eat Everything (common)
Signature Spell-Slice (common)
Driel's Herald (common)
Plans Forseen (common)
Underworld Vaguard (common)
Sanguine Dance (common)
Pfeilso, Spreading Slime (common)
Slag Samurai (common)
Holy Moon's Favor (common)
Forest (basic)