, Sacrifice a creature: Return target creature card from your graveyard to the battlefield. Activate only during your upkeep.

Protection from Humans
Pay 1 life, Sacrifice another creature: Put a -1/-1 counter on up to one target creature and draw a card.
, Discard a card: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Sacrifice a creature: Draw cards equal to the sacrificed creature's power, then discard three cards.

Flying
Other blue creatures you control get +1/+1.
Other black creatures you control get +1/+1.

(: Add or .)
As this land enters, you may pay 2 life. If you don't, it enters tapped.

Flying
Your opponents can't gain life.
At the beginning of each end step, each opponent loses life equal to the life that player lost this turn. (Damage causes loss of life.)

Search your library for an enchantment card, reveal it, put it into your hand, then shuffle.

Protection from green
: Regenerate this creature.

Haste
When this creature enters, creatures you control gain trample and get +X/+X until end of turn, where X is the number of creatures you control.

As long as you control another Elf, you may play an additional land on each of your turns.
Landfall — Whenever a land you control enters, put two +1/+1 counters on target creature you control. It gains vigilance until end of turn.

Draw two cards, then discard two cards.

If an opponent would be dealt commander damage, they receive triple that amount of commander damage instead. (They don't actually take more damage, it just counts as triple the amount of commander damage.)

Flash
Flying, vigilance
When Archangel Avacyn enters, creatures you control gain indestructible until end of turn.
When a non-Angel creature you control dies, transform Archangel Avacyn at the beginning of the next upkeep.

This creature gets +1/+1 for each land card in your graveyard.
, Sacrifice a Forest or Plains: Search your library for a land card, put it onto the battlefield, then shuffle.

If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost.
Destroy target nonblack creature. It can't be regenerated.

When Mjölnir enters, it deals 4 damage to up to one target creature.
Double all damage equipped creature would deal.
Equip worthy (A creature is worthy if it's a legendary non-Villain that's red and/or white.)
, Discard this card: It deals 2 damage to each creature.

Target player activates a mana ability of each land they control. Then that player loses all unspent mana and you add the mana lost this way.

Creature cards in graveyards and libraries can't enter the battlefield.
Players can't cast spells from graveyards or libraries.

Whenever a player chooses one or more targets, each player reveals the top card of their library. The player who reveals the card with the greatest mana value may change the target or targets. If two or more cards are tied for greatest, the target or targets remain unchanged. Changing targets this way doesn't trigger abilities of permanents named Psychic Battle.

: Target creature you control with toughness less than this creature's power gains flying until end of turn. Destroy that creature at the beginning of the next end step.