Electric Seaweed + Vigor + Woe Strider + Scurry Oak

Electric Seaweed

Vigor

Woe Strider

Scurry Oak

How it works

1. Cast Electric Seaweed by paying 2.
2. When Electric Seaweed enters, it triggers.
3. Activate Electric Seaweed by tapping it, attempting to deal 1 damage to Scurry Oak, which will instead put a +1/+1 counter on it due to Vigor.
4. Scurry Oak triggers, creating a creature token.
5. Activate Woe Strider by sacrificing the creature token.
6. When the creature token dies, Electric Seaweed triggers, dealing 1 damage to each non-Wall creature your opponents control. Each non-Wall creature you control (excluding Vigor) will not be dealt damage, and will instead have a +1/+1 counter put on it due to Vigor.
7. Scurry Oak triggers, creating a creature token.
8. Resolve the Woe Strider ability.
9. Repeat from step 5.

This ingenious engine turns a spark of direct damage into an escalating avalanche of power. It all begins when you point Electric Seaweed's tap ability at Scurry Oak; thanks to Vigor, that damage is gracefully prevented and converted into a +1/+1 counter instead. This triggers Scurry Oak to spawn a token, which Woe Strider happily sacrifices, sending the token to the graveyard and triggering Electric Seaweed's entry-turned-death ripple to repeat the cycle over and over.