At the beginning of your upkeep, draw a card if you control the creature with the greatest toughness or tied for the greatest toughness.

Draw a card, then draw cards equal to the number of cards named Accumulated Knowledge in all graveyards.

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.)

When Acidic Slime enters, destroy target artifact, enchantment, or land.

When Aether Hub enters, you get {E} (an energy counter).

{T}: Add {C}.

{T}, Pay {E}: Add one mana of any color.

Echo {1}{G} (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.)

{1}{G}: Regenerate Albino Troll.

When Anathemancer enters, it deals damage to target player equal to the number of nonbasic lands that player controls.

Unearth {5}{B}{R} ({5}{B}{R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

Destroy target artifact.

Flashback {G} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{T}: Add one mana of any color. Spend this mana only to cast a creature spell.

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

Enchanted creature gets +2/+2 and has trample.

Whenever enchanted creature deals damage, you gain that much life.

Trample

Madness {2}{G} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

When you cast this spell, you may return target creature card from your graveyard to the battlefield.

Annihilator 2 (Whenever this creature attacks, defending player sacrifices two permanents of their choice.)

Whenever a player cycles a card, you may exile target creature. If you do, return that card to the battlefield under its owner’s control at the beginning of the next end step.

Artifact and enchantment spells your opponents cast cost {2} more to cast.

Sacrifice Aura of Silence: Destroy target artifact or enchantment.

{T}: Add {W}.

Haste

Echo {3}{R} (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 Avalanche Riders enters, destroy target land.

When Banisher Priest enters, exile target creature an opponent controls until Banisher Priest leaves the battlefield.

When this enchantment enters, exile target nonland permanent an opponent controls until this enchantment leaves the battlefield.

{1}{G}: Basking Rootwalla gets +2/+2 until end of turn. Activate only once each turn.

Madness {0} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Target creature and all other creatures with the same name as that creature get -3/-3 until end of turn.