Experiment Kraj + Horseshoe Crab Combos

4 known combos featuring both cards in Commander

Infinite mana lands you control can produce Infinite +1/+1 counters on creatures you control Infinite untap of lands you control

Combo 1 with Incubation Druid

Also requires: Incubation Druid Incubation Druid
Results: Infinite mana lands you control can produce · Infinite +1/+1 counters on creatures you control
Steps
  1. Activate Experiment Kraj by tapping it, putting a +1/+1 counter on Horseshoe Crab.
  2. Activate Experiment Kraj using Horseshoe Crab's ability by paying {U}, untapping it.
  3. Activate Experiment Kraj by tapping it, putting a +1/+1 counter on Incubation Druid.
  4. Activate Experiment Kraj using Horseshoe Crab's ability by paying {U}, untapping it.
  5. Activate Experiment Kraj by tapping it, putting a +1/+1 counter on itself.
  6. Activate Experiment Kraj using Horseshoe Crab's ability by paying {U}, untapping it.
  7. Activate Experiment Kraj using Incubation Druid's ability by tapping it, adding at least {U}{U}{U}.
  8. Repeat from step 6.

Combo 2 with Argothian Elder

Also requires: Argothian Elder Argothian Elder
Results: Infinite mana lands you control can produce · Infinite +1/+1 counters on creatures you control
Show steps
  1. Activate up to two lands you control by tapping them, adding at least {U}{U}.
  2. Activate Experiment Kraj by tapping it, putting a +1/+1 counter on Horseshoe Crab.
  3. Activate Experiment Kraj using Horseshoe Crab's ability by paying {U}, untapping it.
  4. Activate Experiment Kraj by tapping it, putting a +1/+1 counter on Argothian Elder.
  5. Activate Experiment Kraj using Horseshoe Crab's ability by paying {U}, untapping it.
  6. Activate Experiment Kraj using Argothian Elder's ability by tapping it, untapping up to two lands.
  7. Activate up to two lands you control by tapping them, adding at least {U}{U}.
  8. Repeat from step 5.

Combo 3 with Krosan Restorer

Also requires: Krosan Restorer Krosan Restorer
Results: Infinite mana lands you control can produce · Infinite +1/+1 counters on creatures you control
Show steps
  1. Activate Experiment Kraj's own ability by tapping it, putting a +1/+1 counter on Horseshoe Crab.
  2. Activate Experiment Kraj using Horseshoe Crab's ability by paying {U}, untapping it.
  3. Activate Experiment Kraj's own ability by tapping it, putting a +1/+1 counter on Krosan Restorer.
  4. Activate Experiment Kraj using Horseshoe Crab's ability by paying {U}, untapping it.
  5. Activate Experiment Kraj using Krosan Restorer's ability by tapping it, untapping up to three lands you control.
  6. Activate those lands by tapping them, adding at least {1}{U}{U}.
  7. Repeat.
  8. Once you have infinite mana, you may activate Experiment Kraj's own ability any number of times, and potentially activate Experiment Kraj any number of times copying abilities of other creatures you have placed +1/+1 counters onto.

Combo 4 with Ley Weaver

Also requires: Ley Weaver Ley Weaver
Results: Infinite mana lands you control can produce · Infinite +1/+1 counters on creatures you control · Infinite untap of lands you control
Show steps
  1. Activate Experiment Kraj using Ley Weaver's ability by tapping it, untapping two lands you control.
  2. Activate a land by tapping it, adding at least {U}.
  3. Activate Experiment Kraj using Horseshoe Crab's ability by paying {U}, untapping Experiment Kraj.
  4. Repeat.
  5. You may tap an additional land each cycle to get infinite mana, and you may then use Experiment Kraj's ability to put infinite +1/+1 counters on creatures you control.
📚 Learn more:
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