Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Flash
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)

As an additional cost to cast this spell, sacrifice an artifact.
Search your library for an artifact card, put that card onto the battlefield, then shuffle.

When an opponent casts a creature spell, if this permanent is an enchantment, it becomes a 3/3 Knight creature with first strike.

Flying, protection from red

, Sacrifice a creature: Put a +1/+1 counter on this creature.

Destroy two target artifacts.

At the beginning of each opponent's upkeep, this artifact deals X damage to that player, where X is the number of cards in their hand minus 4.

Flash
Protection from red

, Sacrifice this creature: It deals damage equal to its power to any target.

Flying
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.

Enchant creature
At the beginning of the upkeep of enchanted creature's controller, that player sacrifices that creature unless they pay .
When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

When you have 10 or less life, if this permanent is an enchantment, it becomes a 3/5 Soldier creature.

Flying
: This creature deals 1 damage to any target.

Enchant creature
Enchanted creature gets +1/+0 for each Mountain you control.

This creature can't be blocked as long as defending player controls an artifact.

At the beginning of each opponent's upkeep, this artifact deals X damage to that player, where X is 3 minus the number of cards in their hand.

Flying
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, destroy target nonartifact, nonblack creature.

All creatures have vigilance.
At the beginning of each player's end step, tap all untapped creatures that player controls that didn't attack this turn. This artifact deals damage to the player equal to the number of creatures tapped this way.

Draw two cards, then discard two cards. Untap up to three lands.

You may have this creature assign its combat damage as though it weren't blocked.

Destroy target creature with power 4 or greater.
Cycling (, Discard this card: Draw a card.)

Enchant creature
Enchanted creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.)
When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

Destroy target creature with flying.

Creatures you control have first strike.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
, : Tap target artifact, creature, or land.

Destroy target creature with power 2 or less.
Cycling (, Discard this card: Draw a card.)

When this enchantment enters, you gain 10 life.
When this enchantment leaves the battlefield, you lose 10 life.

Flying
, Sacrifice this creature: Target creature gets -2/-2 until end of turn.

, : You may put a creature card from your hand onto the battlefield.

Target creature gets +7/+7 until end of turn.

A player who controls more permanents than each other player can't play lands or cast artifact, creature, or enchantment spells. That player may sacrifice a permanent of their choice for that player to ignore this effect until end of turn.

Haste
Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, destroy target land.

Flying
Whenever this creature blocks, it gets +0/+2 until end of turn.

Whenever a creature deals damage to you, destroy it.

Echo (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.)
When this creature enters, you gain 5 life.