Cortraevas: Perpetuality: Virtual Booster

Ialma, Unwary Risk-Taker    M  Legendary Planeswalker – Ialma +1: Until the beginning of your next upkeep, whenever an opponent casts a permanent spell, instants and sorceries you cast cost less until end of turn. -1: Destroy target artifact. -4: You gain an emblem with "Whenever a card is exiled from your library, you may discard a card, then draw a card." 3	Illustrate Illusion    U  Enchantment – Aura Enchant creature or artifact Whenever one or more counters are put on the enchanted creature, up to one target creature gets -2/-0 until end of turn. The AI at the core of Cortraevas could simulate all disasters that you think of, and those you could not think of.	Spellbound Ghost    U  Creature – Spirit Bound (As this card enters the battlefield, you may exile a nonland card from your graveyard underneath it.) Whenever you cast an instant or sorcery that shares a mana value with the card bound to Spellbound Ghost, that spells gains "This spell can't be countered by spells or abilities." 2/1	Signal Disruptor    U  Enchantment – Aura Enchant creature Whenever enchanted creature deals combat damage to a player, look at the top X cards of that player's library, where X is the number of counters on the enchanted creature. You may put those cards back in any order.	Ancient Steam Strider    C  Artifact Creature – Giant Ancient Steam Strider enters the battlefield with four +1/+1 counters. Whenever one or more counters are removed from Ancient Steam Strider, you tap or untap another target creature. 0/0
Systems Assessor    C  Artifact Creature – Goblin Monk Prowess When Systems Assessor enters the battlefield, if you control four or more noncreature artifacts, Systems Assessor gains haste until end of turn. 1/1	System Lockout    C  Instant Counter target instant or sorcery spell. Spells that target System Lockout cost an additional to cast.	Salvager Slug    C  Artifact Creature – Slug Weld (When this creature would die you may pay . If you do, put this creature on the bottom of your library and put a +1/+1 counter on target creature you control. ) When Salvager Slug is put on the bottom of your library, you may put up to four target creature cards from your graveyard on the bottom on your library in any order. 1/5	Vampiric Virus    C  Instant Vitality- If Vampiric Virus targets a nonartifact creature, when that creature enters the battlefield from a graveyard this turn, it enters the battlefield with a +1/+1 counter. Target creature gains lifelink until end of turn. When that creature dies this turn, return it to the battlefield tapped.	Keeper of the Core    C  Artifact Creature – Cleric Lifelink At the beginning of your upkeep, if your life total is five or greater than your starting lifetotal, put a +1/+1 counter on Keeper of the Core. 1/2
Sunken Kingdom Salvager    C  Artifact Creature – Merfolk Rogue Whenever Sunken Kingdom Salvager deals combat damage to a player, you may pat . If you do, draw a card, then discard a card. Nothing goes to waste on Cortraevas. If it exists, it can serve a purpose. 2/2	Alert System Prophet    C  Artifact Creature – Goblin Shaman Whenever Alert System Prophet deals combat damage to a player, you may pay . If you do, exile the top card of your library. Until end of turn, you may player that card. 2/2	Rusty Puma    C  Artifact Creature – Cat Rusty Puma enters the battlefield with two +1/+1 counters. : Rusty Puma gains first strike until end of turn. 0/0	Return to Before    C  Instant Exile target artifact or enchantment. If a permanent exiled this way had one or more counters on it, gain 2 life and draw a card.	Swamp    B  Basic Land – Swamp

Ialma, Unwary Risk-Taker (mythic)
Illustrate Illusion (uncommon)
Spellbound Ghost (uncommon)
Signal Disruptor (uncommon)
Ancient Steam Strider (common)
Systems Assessor (common)
System Lockout (common)
Salvager Slug (common)
Vampiric Virus (common)
Keeper of the Core (common)
Sunken Kingdom Salvager (common)
Alert System Prophet (common)
Rusty Puma (common)
Return to Before (common)
Swamp (basic)