You may play lands from your graveyard.

You have no maximum hand size. {T}: Add {C}.

Flying Whenever Ancient Silver Dragon deals combat damage to a player, roll a d20. Draw cards equal to the result. You have no maximum hand size for the rest of the game.

Body of Knowledge's power and toughness are each equal to the number of cards in your hand. You have no maximum hand size. Whenever Body of Knowledge is dealt damage, draw that many cards.

Flying Protection from red (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything red.) Sacrifice Cerulean Drake: Counter target spell that targets you.

Flying You have no maximum hand size. Whenever a creature token you control deals combat damage to a player, draw a card.

{T}, Sacrifice Daring Apprentice: Counter target spell.

{U}, {T}, Discard a card: Counter target spell or ability that targets a creature.

{T}: Counter target spell unless its controller pays {1}. Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

{T}: Counter target spell unless its controller pays {1}.

Flash Flying When Draining Whelk enters the battlefield, counter target spell. Put X +1/+1 counters on Draining Whelk, where X is that spell's mana value.

You have no maximum hand size.

When Meldweb Curator enters the battlefield, put up to one target instant or sorcery card from your graveyard on top of your library.

Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.) Channel — {2}{U}, Discard Mirrorshell Crab: Counter target spell or ability unless its controller pays {3}.

Tap an untapped Wizard you control: Counter target spell unless its controller pays {1}.

Flying {3}, Return a land you control to its owner's hand: Counter target spell unless its controller pays {3}.

As Declaration of Naught enters the battlefield, choose a card name. {U}: Counter target spell with the chosen name.

Whenever you cast an instant or sorcery spell, create an X/X colorless Construct artifact creature token, where X is that spell's mana value. {3}{U}{U}, Exile Metallurgic Summonings: Return all instant and sorcery cards from your graveyard to your hand. Activate only if you control six or more artifacts.

Counter target spell. Create X 1/1 colorless Thopter artifact creature tokens with flying, where X is that spell's mana value.

Raid — If you attacked this turn, you may pay {U} rather than pay this spell's mana cost. Counter target spell.

Counter target spell. If that spell targets a commander you control, instead counter that spell, scry 2, then draw a card.

Counter target spell. Madness {3}{U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)

Counter target spell.

Counter target spell that targets a creature. Draw a card.

Counter target spell. Draw a card.

Counter target spell. Recover {2}{U}{U} (When a creature is put into your graveyard from the battlefield, you may pay {2}{U}{U}. If you do, return this card from your graveyard to your hand. Otherwise, exile this card.)

Counter target spell. You may cast a spell that shares a card type with it from your hand without paying its mana cost.

Counter target spell. Its controller mills four cards.

Counter target spell.

As an additional cost to cast this spell, return a land you control to its owner's hand. Counter target spell.

Counter target spell. If an artifact or creature spell is countered this way, put that card onto the battlefield under your control instead of into its owner's graveyard.

Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard. You may shuffle up to four target cards from your graveyard into your library.

Counter target spell. Its controller mills three cards.

Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)

As an additional cost to cast this spell, return a permanent you control to its owner's hand. Counter target spell.

Counter target spell. Look at the top four cards of your library, then put them back in any order.

Counter target spell. Its controller discards a card.

Counter target spell. Draw a card.

Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Counter target spell. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Counter target spell. Its controller draws a card. Draw a card.

This spell costs {U} less to cast if an opponent cast two or more spells this turn. Counter target spell.

As an additional cost to cast this spell, return a creature you control to its owner's hand. Counter target spell.

Counter target spell, then proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Counter target spell. If that spell is countered this way, put that card on the top or bottom of its owner's library instead of into that player's graveyard.

Bargain (You may sacrifice an artifact, enchantment, or token as you cast this spell.) This spell costs {1} less to cast if it's bargained. Counter target spell.

Counter target spell that targets a permanent you control. Draw a card.

This spell can't be countered. Counter target spell.

Counter target spell. Return target permanent to its owner's hand.

Counter target spell. Cycling {2} ({2}, Discard this card: Draw a card.)

This spell costs {2} less to cast if it targets a creature spell. Counter target spell.

Assist (Another player can pay up to {3} of this spell's cost.) Counter target spell.

Surge {U}{U} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.) This spell can't be countered. Counter target spell.

Counter target spell. At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.

Counter target spell. If that spell's mana value was 3 or less, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Counter target spell. Untap up to four lands.

Counter target spell. Awaken 3—{4}{U}{U} (If you cast this spell for {4}{U}{U}, also put three +1/+1 counters on target land you control and it becomes a 0/0 Elemental creature with haste. It's still a land.)

Counter target spell. Fateful hour — If you have 5 or less life, draw a card.

({T}: Add {U}.)