Illithid Harvester // Plant Tadpoles
Creature — Horror // Sorcery — Adventure
Ceremorphosis — When this creature enters, turn any number of target tapped nontoken creatures face down. They're 2/2 Horror creatures.
- CMC
- 5
- Mana cost
- Color identity
- U
- Rarity
- rare
- Set
- Commander Legends: Battle for Baldur's Gate
- Price
- $0.39
- EDHREC rank
- #6558
Illithid Harvester // Plant Tadpoles taps to turn any creature into a 0/1 Plant Tadpole token and grows increasingly threatening as those tadpoles mature — all on a repeatable activated ability that costs no mana. The cost is real: six mana to cast plus summoning sickness means it's a turn-seven-or-later play in most decks, but Gorion, Wise Mentor builds that cast it for value on entry sidestep the waiting entirely.
Best Commanders
Commanders with the highest synergy

Gorion, Wise Mentor
Gorion, Wise Mentor casts Illithid Harvester // Plant Tadpoles as an adventure target, immediately converting an opponent's creature into a tadpole the turn it enters and bypassing the summoning sickness window that otherwise taxes the card.
Beluna Grandsquall
Beluna Grandsquall rewards casting spells with odd mana values, and Illithid Harvester // Plant Tadpoles at six fits that profile — the adventure half also provides an odd-cost cast trigger before the creature ever hits the battlefield.

Hylda of the Icy Crown
Hylda of the Icy Crown generates value whenever you tap or freeze a creature, so the tapping activation on Illithid Harvester // Plant Tadpoles doubles as a Hylda trigger every turn you convert an opponent's board piece.

Hinata, Dawn-Crowned
Hinata, Dawn-Crowned reduces the cost of spells that target multiple permanents, and while the activated ability isn't a spell, the adventure side targets a creature — meaning Hinata players include Illithid Harvester // Plant Tadpoles primarily for the cheap, targeted adventure entry.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | not legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Commander is where Illithid Harvester // Plant Tadpoles does real work — three opponents means three creatures worth converting, and the incremental board erosion it produces over several turns compounds in a format where games go long. Legacy and Vintage are legal but irrelevant; a six-mana do-nothing-until-next-turn permanent has no competitive role in either format. Oathbreaker is the only other format worth mentioning, and there the card functions similarly to its Commander role — a slow engine in a slower format.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.39 bulk tier
At $0.39, Illithid Harvester // Plant Tadpoles is firmly bulk, which is accurate for a slow, build-around card with a narrow competitive ceiling. It's unlikely to climb unless a new commander creates a breakout synergy, so picking up copies now is painless if the effect fits your deck.
Explore
Sources
Mentioned
- Gorion, Wise Mentor
- Beluna Grandsquall
- Hylda of the Icy Crown
- Hinata, Dawn-Crowned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.