Artifact Creature - Myr (3/3)
Whenever ~this~ blocks one or more creatures, put a leak counter on target creature
Each permanent with a leak counter on it gains ''All blocking creatures get +2/+4''
3G, Sacrifice a untapped basic land: target creature with a leak counter on it gets +3/+2 until end of turn
If a Myr would be turned face up, instead tap that creature

Converted mana cost: 1

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AlexChurchill/TypeFourArtifactGenerator