Candy Trail

When Candy Trail enters the battlefield, scry 2.
{2}, {T}, Sacrifice Candy Trail: You gain 3 life and draw a card.

Sol Ring

End the Festivities

End the Festivities deals 1 damage to each opponent and each creature and planeswalker they control.

Alchemist's Gambit

Cleave {4}{U}{U}{R} (You may cast this spell for its cleave cost. If you do, remove the words in square brackets.)
Take an extra turn after this one. During that turn, damage can't be prevented. [At the beginning of that turn's end step, you lose the game.]
Exile Alchemist's Gambit.

Lotus Petal

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

Last Chance

Take an extra turn after this one. At the beginning of that turn's end step, you lose the game.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Fierce Guardianship

If you control a commander, you may cast this spell without paying its mana cost.
Counter target noncreature spell.

Mental Misstep

({U/P} can be paid with either {U} or 2 life.)
Counter target spell with mana value 1.

Elixir of Immortality

{2}, {T}: You gain 5 life. Shuffle Elixir of Immortality and your graveyard into their owner's library.

Laboratory Maniac

If you would draw a card while your library has no cards in it, you win the game instead.

Gamble

Search your library for a card, put that card into your hand, discard a card at random, then shuffle.

Warrior's Oath

Rite of Flame

Add {R}{R}, then add {R} for each card named Rite of Flame in each graveyard.

Isochron Scepter

Imprint — When Isochron Scepter enters the battlefield, you may exile an instant card with mana value 2 or less from your hand.
{2}, {T}: You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.

Mountain

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Feldon's Cane

{T}, Exile Feldon's Cane: Shuffle your graveyard into your library.

Simian Spirit Guide

Exile Simian Spirit Guide from your hand: Add {R}.

Final Fortune

Pyroblast

Choose one —
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.

Obeka, Brute Chronologist

{T}: The player whose turn it is may end the turn. (Exile all spells and abilities from the stack. The player whose turn it is discards down to their maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)