When Chthonian Nightmare enters, you get (three energy counters).Pay X , Sacrifice a creature, Return Chthonian Nightmare to its owner's hand: Return target creature card with mana value X from your graveyard to the battlefield. Activate only as a sorcery.
When Unstable Amulet enters, you get (two energy counters).Whenever you cast a spell from anywhere other than your hand, Unstable Amulet deals 1 damage to each opponent., Pay : Exile the top card of your library. You may play it until you exile another card with Unstable Amulet.
Choose one —• Thraben Charm deals damage equal to twice the number of creatures you control to target creature.• Destroy target enchantment.• Exile any number of target players' graveyards.
Bestow—, Collect evidence 6. (To pay this bestow cost, pay and exile cards with total mana value 6 or greater from your graveyard.)Flying, hasteEnchanted creature gets +2/+2 and has flying and haste.You may cast Detective's Phoenix from your graveyard using its bestow ability.
Target creature you control gets +2/+2 until end of turn. It fights up to one target creature you don't control. (Each deals damage equal to its power to the other.)As Tanglespan Bridgeworks enters, you may pay 3 life. If you don't, it enters tapped.: Add .
Search your library for an instant card or a card with flash, reveal it, put it into your hand, then shuffle.Inundated Archive enters tapped.: Add or .
Flying, lifelinkWard—Discard a card.Whenever a modified creature you control attacks, double the number of each kind of counter on it. Then for each nontoken permanent attached to it, create a token that's a copy of that permanent attached to that creature.
: Add . Cephalid Coliseum deals 1 damage to you.Threshold — , , Sacrifice Cephalid Coliseum: Target player draws three cards, then discards three cards. Activate only if seven or more cards are in your graveyard.
If you would get one or more (energy counters), you get that many plus one instead.: Draw a card. Activate only if you've paid or lost four or more this turn.
When Primal Prayers enters, you get (two energy counters).You may cast creature spells with mana value 3 or less by paying rather than paying their mana costs. If you cast a spell this way, you may cast it as though it had flash.
Target creature you control deals damage equal to its power to target creature or planeswalker you don't control.Burnwillow Clearing enters tapped.: Add or .
( can be paid with either or 2 life.)LifelinkFor each in a cost, you may pay 2 life rather than pay that mana.Whenever you cast a black spell, put a +1/+1 counter on K'rrik, Son of Yawgmoth.
Razorgrass Ambush deals 3 damage to target attacking or blocking creature.As Razorgrass Field enters, you may pay 3 life. If you don't, it enters tapped.: Add .
Monumental Henge enters tapped unless you control a Plains.: Add ., : Look at the top five cards of your library. You may reveal a historic card from among them and put it into your hand. Put the rest on the bottom of your library in a random order. (Artifacts, legendaries, and Sagas are historic.)
Flying, lifelinkWard—Discard a card.Whenever a modified creature you control attacks, double the number of each kind of counter on it. Then for each nontoken permanent attached to it, create a token that's a copy of that permanent attached to that creature.
Noncreature spells you cast from exile have convoke. (Each creature you tap while casting a noncreature spell from exile pays for or one mana of that creature's color.)At the beginning of your first main phase, you may discard a card. If you do, exile the top two cards of your library, then choose one of them. You may play that card this turn.