+"Magic 2015 Core Set", +designed, +by (15)
You can't play lands.
Sacrifice a land: Draw two cards. Activate only once each turn.
Equipped creature gets +2/+0 and has vigilance and "At the beginning of your upkeep, draw a card."
Whenever equipped creature dies, target opponent gains control of Avarice Amulet.
Equip (: Attach to target creature you control. Equip only as a sorcery.)
Whenever you draw a card, put a +1/+1 counter on Chasm Skulker.
When Chasm Skulker dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.)
, , Pay 1 life: Put a +1/+1 counter on Cruel Sadist.
, , Remove X +1/+1 counters from Cruel Sadist: It deals X damage to target creature.
When you cast this spell, reveal the top X cards of your library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield. Then shuffle the rest into your library.
Genesis Hydra enters the battlefield with X +1/+1 counters on it.
At the beginning of your upkeep, create a colorless artifact token named Land Mine with ", Sacrifice this artifact: This artifact deals 2 damage to target attacking creature without flying." Then flip a coin. If you lose the flip, Goblin Kaboomist deals 2 damage to itself.
Equipped creature can't be blocked.
Whenever equipped creature is dealt damage, destroy it.
Flying
Whenever Master of Predicaments deals combat damage to a player, choose a card in your hand. That player guesses whether the card's mana value is greater than 4. If the player guessed wrong, you may cast the card without paying its mana cost.
Flying, trample
Whenever an opponent searches their library, that player sacrifices a creature and loses 10 life.
Whenever another creature dies, put a +1/+1 counter on Ob Nixilis, Unshackled.
If a source would deal damage to equipped creature, prevent X of that damage, where X is the number of creatures you control.
Whenever a nontoken creature enters the battlefield under your control, you may pay . If you do, create a 1/1 white Spirit creature token with flying.
, Sacrifice a Spirit: Target non-Spirit creature gains indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)
Vigilance (Attacking doesn't cause this creature to tap.)
Warden of the Beyond gets +2/+2 as long as an opponent owns a card in exile.
Whenever an opponent discards a creature card, create a 2/2 black Zombie creature token.
Whenever an opponent discards a land card, add .
Whenever an opponent discards a noncreature, nonland card, draw a card.
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
: Until end of turn, Xathrid Slyblade loses hexproof and gains first strike and deathtouch. (It deals combat damage before creatures without first strike. Any amount of damage it deals to a creature is enough to destroy it.)
, , Put a verse counter on Yisan, the Wanderer Bard: Search your library for a creature card with mana value equal to the number of verse counters on Yisan, put it onto the battlefield, then shuffle.
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