As an additional cost to cast this spell, sacrifice a creature or pay {4}.
Heedless Cruelty deals 5 damage to target creature or planeswalker.

Enchant creature
Enchanted creature has defender.
Approval — {2}: Exile enchanted creature if its power is less than or equal to the number of colors among permanents you control.

Enchant creature
Enchanted creature gets +1/+1 and has protection from creatures.

{2}, Sacrifice Helm of the Shattered Realm: Destroy target artifact or enchantment. Activate only as a sorcery.
Equipped creature gets +1/+1 and has ward {2}.
Equip {1}

Reveal the top three cards of your library. You may put a nonland permanent card with mana value 2 or less from among them or from your graveyard onto the battlefield tapped. Put the rest of the revealed cards on the bottom of your library in a random order. If a legendary permanent was put onto the battlefield this way, you gain 2 life.

Choose one —
• Target creature you control gets +1/+1 and gains first strike until end of turn.
• Target legendary creature you control gets +1/+1 and gains double strike until end of turn.

High Teqien enters tapped unless you control a basic non-Island land.
{T}: Add {U}.
{2}{U}, {T}, Sacrifice High Teqien: Gain control of target land. Its owner may search their library for a basic land card, put it onto the battlefield, then shuffle.

This spell costs {2} less to cast as long as you've cast another instant or sorcery spell this turn.
High Voltage deals 3 damage to any target.

You may pay {R} rather than pay this spell's mana cost. Spend only mana produced by artifact sources to cast it this way.
Hired Shot deals 3 damage to any target.

Hold to the Flame enters with a blaze counter on it.
Whenever you cast an instant or sorcery spell with mana value 4 or greater, put a blaze counter on Hold to the Flame. Then it deals damage equal to the number of blaze counters on it to any target.

Flash
Enchant creature
Enchanted creature can't attack or block.

Holo-Map enters with two charge counters on it.
{1}, {T}, Remove a charge counter from Holo-Map: Target creature can't be blocked this turn. Scry 2.

Put a hexproof counter on target creature you control. At the beginning of the next end step, remove a counter from that creature.

Hundred-Handed Pillars enters tapped.
{T}: Add {W} or {U}.
{7}{W/U}: Hundred-Handed Pillars becomes a 4/6 white and blue Giant creature with vigilance until end of turn. It's still a land. This ability costs {X} less to activate, where X is your devotion to white and blue. Activate only once each turn.

Hyperloop Obelisk enters tapped.
{T}: Add {U}, {B}, or {R}.
{VP}{VP}{VP}{VP}, Discard Hyperloop Obelisk: Untap target creature. It gets +4/+4 until end of turn.

Target creature has base power and toughness 1/1 and loses all abilities until your next turn.
Draw a card.

Exile the top card of your library. You may play that card this turn.
Flashback {R}

Ignite deals damage to any target equal to your devotion to red.

When you cast this spell, target player skips their next combat phase.
[+1]: Create a 3/1 white Knight creature token with “As long as it's your turn, this creature has indestructible.”
[0]: Exile a permanent card from your graveyard. Return that card to the battlefield at the beginning of your next turn's end step.
[–3]: At the beginning of your next turn's end step, destroy all creatures.

Enchant land
Enchanted land is a 4/4 Dryad creature with reach, vigilance, and haste. It's still a land.
When enchanted land dies, return it to its owner's hand.

Create three 1/1 colorless Cyborg artifact creature tokens, then you gain 1 life for each artifact you control. Each opponent loses that much life.

Target creature gets +2/+2 until end of turn. If you've cast another instant or sorcery spell this turn, put a +1/+1 counter on it.

Target creature gets +2/+2 until end of turn. Untap that creature. Put a flying counter on it.

Draw a card, gain 3 life, then make a pledge.
If you've cast four or more spells named Incumbency this game and there are five colors among permanents you control, you win the game.

Target blocking creature you control dares 10.