Whenever this Subroutine runs, when you next cast an instant, sorcery, or Subroutine spell this turn, copy it. You may choose new targets for the copy.

Revered
Landfall — Whenever a land you control enters, put a +1/+1 counter on this creature. Then if you control eight or more lands, double the number of +1/+1 counters on this creature.

When this creature enters, create a colorless artifact token named Puzzlebox with “{T}, Discard a card: Draw a card.”
Whenever a creature you control attacks, you may exile a number of cards from your graveyard equal to its power. If you do, put a +1/+1 counter on it.

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

Cards in graveyards can't leave the graveyard.
Cycling {2}

Corrupt — All creatures get -2/-2 until end of turn. If you control a permanent with greater mana value than this spell, instead creatures your opponents control get -2/-2 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.

As an additional cost to cast this spell, sacrifice a creature.
Fall Upon Your Blade deals damage equal to the sacrificed creature's power to any target.
Cycling {2}

Whenever a creature you control attacks alone, you may pay {1}{B}. If you do, return this card from your graveyard to the battlefield tapped and attacking.

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.

Fatal Flourish deals 4 damage to target creature. If excess damage is dealt this way, put that many +1/+1 counters on a creature you control.
Cycling {2}

Trample
Forestcycling {2}

When this land enters, sacrifice it. If you do, search your library for a basic Swamp or Mountain card, put it onto the battlefield tapped, then shuffle.
{2}{B}{B}{R}{R}, Discard this card: Create a 4/4 red Error creature token with menace.

Fabric — When this creature enters, add X mana in any combination of colors, where X is the number of enchantments you control.
{1}{R}, Discard a card: Draw a card.

Enchant creature you control
Enchanted creature gets +1/+1.
When this Aura enters, enchanted creature fights up to one target creature.

Choose one —
• Destroy target artifact.
• Destroy target enchantment.
• Return target permanent card from your graveyard to your hand.

This land enters tapped.
{2}{R}{G}, {T}: Surveil 1.

Destroy target creature or enchantment. You lose life equal to its mana value.

Look at the top six cards of your library. You may put a creature card with mana value 3 or less from among them onto the battlefield. It enters with an additional +1/+1 counter on it. Put the rest on the bottom of your library in a random order.
Cycling {R/G}

When this land enters, sacrifice it. If you do, search your library for a basic Swamp or Forest card, put it onto the battlefield tapped, then shuffle.
{2}{B}{B}{G}{G}, Discard this card: Return up to one target creature card and up to one target enchantment card from your graveyard to your hand.

This land enters tapped unless you control one or fewer other lands.
{T}: Add {B} or {G}.
Cycling {2}

Choose one —
• Frag deals 4 damage to target creature.
• Destroy target artifact.

When this creature enters, target creature you control gets +2/+2 until end of turn.
Plainscycling {2}

Revered
Whenever this creature attacks, add {R}. Until end of turn, you don't lose this mana as steps and phases end.