Assemble the Entmoot is a rare Enchantment card from Tales of Middle-earth Commander (LTC), collector number 119. Current market price: $1.65, TCGplayer market prices via Scryfall.
Creatures you control have reach. Sacrifice this enchantment: Create three tapped X/X green Treefolk creature tokens, where X is the amount of life you gained this turn. Put a reach counter on each of them.