the front side of Krenko, Mob Boss
the back of a classic MtG card
the front side of Skirk Prospector
the back of a classic MtG card
the front side of Fervor
the back of a classic MtG card

Color Identity: R

Initial Card State

  1.  All permanents on the battlefield.
  2.  Krenko must be your commander.

Notable Prerequisites

  1. You control a number of Goblins that is equal to or greater than six plus Krenko's commander tax.

Steps

  1. Activate Krenko by tapping it, creating a number of 1/1 Goblin creature tokens equal to the number of Goblins you control.
  2. Activate Skirk Prospector by sacrificing Krenko, adding one red mana.
  3. Choose to return Krenko to the command zone from your graveyard.
  4. Activate Skirk Prospector by sacrificing a Goblin, adding one red mana.
  5. Repeat step 4 until you have enough mana to cast Krenko.
  6. Cast Krenko from the command zone by paying two generic manaone red manaone red mana plus commander tax.
  7. Repeat.

Results

  1. Infinite creature LTB.
  2. Infinite creature ETB.
  3. Infinite creature sacrifice triggers.
  4. Infinite death triggers.
  5. Infinite storm count.
  6. Infinite red mana.
  7. Infinite creature tokens with haste.
  8. Infinite commander casts.

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Commander tax calculator

Does the Krenko loop grow?

Krenko doubles your Goblins, then Skirk Prospector sacrifices Krenko and enough Goblins to recast it, tax included. With Goblins minus tax at 5 the loop makes two more Goblins each time, as fast as the tax grows; above that it grows faster and faster, below it dies out.

Goblins needed7with two generic mana commander tax

The loop grows every time Arbitrarily many Goblins, two more each loop, as the tax grows by two generic mana.

Goblins, step by step
  • To start: 7 Goblins
  • Krenko taps: 14 Goblins
  • Sacrifice 6, Krenko included, to recast it for four generic manaone red manaone red mana: 9 Goblins
  • Krenko taps: 18 Goblins
  • Sacrifice 8, Krenko included, to recast it for six generic manaone red manaone red mana: 11 Goblins
  • Krenko taps: 22 Goblins
  • Sacrifice 10, Krenko included, to recast it for eight generic manaone red manaone red mana: 13 Goblins
  • Krenko taps: 26 Goblins
  • Sacrifice 12, Krenko included, to recast it for ten generic manaone red manaone red mana: 15 Goblins
  • Krenko taps: 30 Goblins
  • Sacrifice 14, Krenko included, to recast it for twelve generic manaone red manaone red mana: 17 Goblins
  • Krenko taps: 34 Goblins
  • Sacrifice 16, Krenko included, to recast it for fourteen generic manaone red manaone red mana: 19 Goblins
  • Krenko taps: 38 Goblins
  • Sacrifice 18, Krenko included, to recast it for sixteen generic manaone red manaone red mana: 21 Goblins
  • Krenko taps: 42 Goblins
  • Sacrifice 20, Krenko included, to recast it for eighteen generic manaone red manaone red mana: 23 Goblins

Variants of this combo

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