Counter target spell. If that spell is countered this way, its controller may put a creature card from their hand onto the battlefield.

Players have no maximum hand size.
, : Each player draws X cards.
, : Each opponent mills cards equal to the number of cards in their hand.

Gravestorm
Investigate.

Enchant creature
At the beginning of your upkeep, create a token that's a copy of enchanted creature.

, Sacrifice this enchantment: Draw two cards.

Instant and sorcery spells you cast cost less to cast for each time you've cast a commander from the command zone this game.

This artifact enters with two oil counters on it.
, : Target player mills X cards, where X is the number of oil counters on this artifact.

Enchant creature
When enchanted creature dies, return that card to the battlefield under your control.
When this Aura is put into a graveyard from the battlefield, return it to its owner's hand.

Flying
This creature can't block.

Buyback — Discard two cards.
Counter target spell.

Look at the top four cards of your library. Put one of them into your hand and the rest into your graveyard.
Flashback

Return target creature to its owner's hand.
Ferocious — If you control a creature with power 4 or greater, you may draw a card. If you do, discard a card.

If it's not your turn, you may exile a blue card from your hand rather than pay this spell's mana cost.
Counter target noncreature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost.
Counter target spell.

Counter target spell unless its controller pays .

Counter target spell unless its controller pays .
Draw a card at the beginning of the next turn's upkeep.

Whenever an opponent casts a spell, that player draws seven cards.

Put target creature on top of its owner's library.

Cascade
Counter target spell.

When this creature enters, create a Clue token.

Whenever you cast an artifact spell, investigate.
Activated abilities of artifacts you control cost less to activate. This effect can't reduce the mana in that cost to less than one mana.

: Untap another target permanent you control.
, Collect evidence 3: Tap target creature you don't control.

Scry 4, then draw two cards.

Choose a card name, then target opponent mills a card. If a card with the chosen name was milled this way, you draw a card.
Draw a card at the beginning of the next turn's upkeep.

Search your library for three cards, exile them, then shuffle.
Draw a card at the beginning of the next turn's upkeep.

: Add . When you spend this mana to cast an instant or sorcery spell with mana value 3 or less, you may exile that spell instead of putting it into its owner's graveyard as it resolves.
, : You may cast any number of spells from among cards exiled with this artifact without paying their mana costs. Activate only as a sorcery.

Target player discards two cards, then draws as many cards as they discarded this way.

Look at the top five cards of your library. You may reveal any number of artifact cards from among them and put the revealed cards into your hand. Put the rest on the bottom of your library in a random order.

Skulk
At the beginning of your upkeep, you may discard all the cards in your hand. If you do, draw that many cards.