{1}, Sacrifice Traveler's Amulet: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Exile the top three cards of your library. Choose two of them. You may play the chosen cards until the end of your next turn.

Mill three cards, then return a creature, enchantment, or land card from your graveyard to your hand.

Create two 3/3 green Centaur creature tokens with vigilance.

Ninjutsu {1}{G}{U}
As long as Tsubasa Shigane entered during combat this turn, he's a 4/4 Ninja creature with hexproof and you may activate his loyalty abilities any time you could cast an instant.
[+1]: Up to one other target creature gains indestructible until end of turn.
[–1]: Double another target creature's power until end of turn.
[–2]: Return target creature to its owner's hand.

Each player chooses up to seven cards from their graveyard, then discards their hand and returns the chosen cards to their hand.
Exile Turf Warfare.

Counter target spell with mana value less than or equal to the number of cards in its controller's graveyard.

Destroy target creature if it's tapped or if it has toughness 4 or greater.

{T}, Sacrifice another nonland permanent: Add X mana in any combination of the sacrificed permanent's colors, where X is 1 plus that permanent's mana value.

Whenever this Subroutine runs, you gain 3 life if an opponent has more life than you. Create two 1/1 white Citizen creature tokens if an opponent controls more creatures than you.

Gain control of target creature until end of turn. Untap that creature. It gains haste until end of turn. You may spend mana of any type to activate its abilities this turn.

When this enchantment enters, cache any number of cards from your hand face down.
Whenever you cast a cached spell, copy it. You may choose new targets for the copy.

Search your library for a card, put it into your hand, then shuffle.
Flashback—{1}{B}, Discard a card, Sacrifice a creature.

Whenever you cast a colorless spell, you may pay {C}. If you do, copy it. You may choose new targets for the copy.
Whenever a creature you control attacks, put a +1/+1 counter on it for each other creature you control with the same name as that creature.

Untap any number of target creatures. They gain flying and protection from noncreatures until end of turn.

Unstable Formation enters with three charge counters on it.
{1}, {T}, Remove a charge counter from Unstable Formation: Unstable Formation deals 1 damage to target player or planeswalker. You may sacrifice Unstable Formation. If you do, draw a card.

Untap all creatures you control. They get +2/+1 until end of turn.
Cycling {2}

As this land enters, you may pay 2 life. If you don't, it enters tapped.
{T}: Add {R} or {G}.

Urban Sunscape enters tapped.
{T}: Add {R} or {W}.
{4}: Make a pledge. Activate only as a sorcery.

Distribute three +1/+1 counters among up to three target creatures.

Valley Village enters tapped.
{T}: Add {R} or {G}.
{1}, Discard Valley Village: Scry 2.

[+2]: Create a colorless artifact token named Potion with “Sacrifice this artifact: Put two +1/+1 counters on target creature. Activate only as a sorcery.”
[–3]: You gain 8 life.
[0]: Remove all loyalty counters from Vasilisa, Helping Hand, then transform her.

Enchant creature or land
When Verdant Grandeur enters, scry 2.
Enchanted permanent has vigilance and “{T}: Add {G}{G}.”
Wander {3}{G}{G}

As this land enters, you may pay 2 life. If you don't, it enters tapped.
{T}: Add {G} or {W}.

Whenever a creature an opponent controls becomes tapped, if it isn't being declared as an attacker, you may draw a card.
{4}{U}: Tap target creature without flying.