When Eidolon of Empty Thoughts dies, create a Treasure token.
{6}: Create a 2/1 red Soldier creature token. Activate only as a sorcery and only if your devotion to red is three or more.

{1}{U}, {T}, Sacrifice Emulation Expert: Gain control of target creature you don't control with mana value 3 or less. Its owner creates a tapped token that's a copy of it. Activate only as a sorcery.

{G}, Sacrifice Entangled Fossil: Target card in your graveyard gains surface until end of turn. The surface cost is equal to its mana cost.
Surface {4}{G}{G}. Entangled Fossil surfaces transformed.

Error Tide deals X damage to target creature or planeswalker.
Corrupt — If you control a permanent with greater mana value than this spell, create an X/X colorless Construct artifact creature token.

Target creature gets +X/+0 and gains trample until end of turn.
Draw a card.

Target creature gets +X/+X until end of turn. It must be blocked each combat this turn if able.

Target creature gains hexproof until end of turn. Teach it vigilance.

Decayed
{1}{B}, Exile Expendable Medic from your graveyard: Return target creature card from your graveyard to your hand. Activate only as a sorcery.

Decayed
{2}{U}, Exile Expendable Researcher from your graveyard: Return target instant or sorcery card from your graveyard to your hand. Activate only as a sorcery.

Draw a card. The next ninjutsu ability you activate this turn costs {1} less to activate.

You may cast this spell as though it had flash as long as {U} is spent to cast it.
Return target creature card with mana value X or less from your graveyard to the battlefield tapped. If {R} was spent to cast this spell, create a token that's a copy of that creature. It gains haste until end of turn. Sacrifice the token at end of combat.

Put a +1/+1 counter on target creature. It gets +2/+0 and gains trample until end of turn.

As an additional cost to cast this spell, remove a level counter from a creature you control or pay {3}.
Exile target creature or planeswalker. Surveil 2.

When Falling Ashes enters, exile up to two target cards from graveyards, then you gain 2 life.

Level up {R/W}
[level 1-2] Whenever a nontoken creature you control with a counter on it dies, create a 1/1 white Citizen creature token.
[level 3+] Whenever a nontoken creature you control with a counter on it dies, create a 4/4 red Error creature token with menace.

Enchant creature
Enchanted creature gets +1/+1 and has vigilance and trample.

Mill X cards. For each land card milled this way, add {B}{B}. For each creature card milled this way, create a 2/2 black Zombie artifact creature token. For each noncreature, nonland card milled this way, draw a card.

Enchant land
Enchanted land has “{T}: Add one mana of any color.”

Choose one or both —
• Target Human creature you control gets +1/+1 and gains indestructible until end of turn.
• Target non-Human creature you control gets +1/+1 and gains indestructible until end of turn.

Choose one or both —
• Target Kraken, Leviathan, Octopus, or Serpent creature you control gets +2/+1 until end of turn.
• Target creature you control fights target creature you don't control.

Before equipped creature would assign, deal, or be dealt damage, sacrifice Figy Berry. If you do, equipped creature gets +2/+2 until end of turn.
Equip {1}
{7}, Sacrifice Figy Berry: Destroy target nonland permanent.

Firebolt deals 2 damage to any target.
Flashback {4}{R}

Draw a card. If you control no creatures, create a 1/1 colorless Cyborg artifact creature token.

Deathtouch
{1}{W}, {T}: Create a Berry token.
{2}{B}, Sacrifice a Berry: Put a +1/+1 counter on Foraging Grub.

Exile target creature you control, then return that card to the battlefield under its owner's control.