Mox Sapphire

Force of Negation

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.

Pact of Negation

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

Wildborn Preserver

Flash (You may cast this spell any time you could cast an instant.)
Reach (This creature can block creatures with flying.)
Whenever another non-Human creature you control enters, you may pay {X}. When you do, put X +1/+1 counters on this creature.

Timetwister

Each player shuffles their hand and graveyard into their library, then draws seven cards. (Then put Timetwister into its owner's graveyard.)

Black Lotus

{T}, Sacrifice Black Lotus: Add three mana of any one color.

Mox Emerald

Force of Will

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

Mox Jet

Ancestral Recall

Mox Pearl

Time Walk

Mox Ruby

Brainstorm

Draw three cards, then put two cards from your hand on top of your library in any order.

Mox Opal

Metalcraft — {T}: Add one mana of any color. Activate only if you control three or more artifacts.