Spells can't be countered.
Each instant and sorcery card in your graveyard has flashback. The flashback cost is equal to that card's mana cost.

Whenever High Perfect Morcant or another Elf you control enters, each opponent blights 1. (They each put a -1/-1 counter on a creature they control.)
Tap three untapped Elves you control: Proliferate. Activate only as a sorcery. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Flying
Whenever you cast a noncreature spell, create a 1/1 white Spirit creature token with flying.
Sacrifice a Spirit: Add .

(: Add .)
This land enters tapped.
, : Each opponent loses 1 life. Activate only if you control two or more black permanents.

(: Add or .)
This land enters tapped unless you control two or more basic lands.

Electrodominance deals X damage to any target. You may cast a spell with mana value X or less from your hand without paying its mana cost.

(: Add .)

Flying
When this creature enters, search your library for a card, put it into your hand, then shuffle.

Lands you control have ": Add one mana of any color."
: Add one mana of any color.

Equipped creature gets +2/+0 and has first strike, vigilance, trample, and haste.
Equip

Choose one —
• Untap all lands you control.
• Until end of turn, lands you control become 2/2 creatures that are still lands.
Entwine (Choose both if you pay the entwine cost.)

Return all nonland permanents target player controls to their owner's hand.

Flash
Domain — This spell costs less to cast for each basic land type among lands you control.
When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield.

Trample
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
Power-up — : Iron Fist deals 5 damage divided as you choose among up to five targets. Put five +1/+1 counters on Iron Fist. (Activate each power-up ability only once. Reduce the cost by his mana cost if he entered this turn.)

Flying
Whenever a player casts a nonblack spell, that player loses 1 life.

This land enters tapped.
: Add .

: Add .
Cycling (, Discard this card: Draw a card.)

Flying, lifelink, protection from Vampires
Katilda's power and toughness are each equal to the number of permanents you control that are Spirits and/or enchantments.
Disturb (You may cast this card from your graveyard transformed for its disturb cost.)

Each player discards all the cards in their hand, then creates that many 2/2 black Zombie creature tokens.

Destroy target artifact or enchantment. Its controller gains 4 life.