Combo Watch: Priest of Titania + Umbral Mantle

Welcome to another instalment of Combo Watch, the column where we break down the most interesting combos in the Commander format. Today we're talking about one of the most accessible interactions out there: two cards, less than six euros, infinite mana. Let's dive in.

How the combo works

The pieces in question are Priest of Titania and Umbral Mantle.

Priest of Titania is a 1/1 Elf with a tap ability that produces one green mana for each Elf on the battlefield. The trick lies in the fact that it counts all Elves, including itself. So if you have at least three other Elves on the battlefield (for a total of four counting the Priest), her ability produces 4+ green mana.

Umbral Mantle is an Equipment that costs 3 mana to equip and grants the equipped creature the following ability: by paying 3 colorless mana, untap that creature and put a +2/+2 counter on it.

Put the two pieces together and it's all systems go:

1. Priest of Titania taps → produces 4+ green mana
2. You use 3 of that mana to activate Umbral Mantle → the Priest untaps and gets +2/+2
3. Repeat from the top

Each cycle leaves you with at least 1 net mana gain (which keeps increasing as the Priest grows and counts herself among the Elves — since the counters only increase her power, not her creature type). The result: infinite green mana and a creature with arbitrarily large power.

Technical note: the minimum number of Elves on the battlefield to start the loop is 4 (the Priest + 3 others). With exactly 4 Elves you produce 4 mana, spend 3 to untap, and net 1 mana. With 5 Elves you're already at +2 per cycle. The more Elves you have, the faster everything snowballs.

The color identity is pure green: neither piece introduces any other colors.

Where to include it (suggested commanders)

Since both pieces are mono-green, this combo fits into any green deck with a reasonable density of Elves. Here are the ideal commanders:

• Lathril, Blade of the Elves (BG) — Total synergy: she produces Elf tokens, the Priest counts those too, and with infinite mana you can activate Lathril as many times as you like to drain everyone out.
• Ezuri, Renegade Leader (G) — The classic Elfball pick. Infinite mana immediately translates into infinite pumps and regenerated attacks.
• Selvala, Heart of the Wilds (G) — Already generates tons of mana on her own; Priest + Mantle closes out the game while Selvala serves as a backup plan.
• Galadriel, Elven-Queen (G) — Newer Elf support with plenty of value; the combo slots naturally into the tribal game plan.
• Marwyn, the Nurturer (G) — She herself can replace the Priest in certain scenarios, but having both makes the deck even more redundant and resilient.

Lines of play and protection

The baseline is straightforward: get at least 4 Elves on the battlefield including Priest of Titania, equip Umbral Mantle (costly at 3 mana, so plan your turn accordingly), and you're off.

How to protect the combo:

• Keep mana open to respond to targeted removal. Veil of Summer and Blossoming Defense are excellent for protecting the Priest during the combo attempt.
• If you're running mono-green, consider Autumn's Veil or Destiny Spinner to shield your spells from counterspells.
• Swiftfoot Boots and Lightning Greaves grant hexproof/haste to the Priest before you even equip the Mantle.

How to convert infinite mana into a win:

• Ezuri, Renegade Leader: infinite pump on all Elves, lethal attacks.
• Finale of Devastation with a huge X: draw and put your entire deck onto the battlefield.
• Walking Ballista or Hydra Broodmaster: classic win conditions with unlimited mana.

Budget vs. premium versions

The distinction is almost irrelevant here: the combo costs €5.52 total (€4.76 for Umbral Mantle, €0.76 for Priest of Titania). We're already in budget territory by definition.

The real investment lies in the rest of the deck: win conditions and protection can cost as much as you like. A budget build relies on finishers like Biomass Mutation or Overwhelming Stampede, while a higher-powered version uses Finale of Devastation and green tutors like Chord of Calling or Eldritch Evolution to find the Priest consistently.

Verdict

Priest of Titania + Umbral Mantle is a combo with no excuse not to be in every green Elf deck. It costs less than a cup of coffee, requires the tribal density you already want to build around, and delivers a devastating payoff. The recommended Bracket 3 rating is honest: the combo is real but not as explosive as an instant-speed two-card loop — you need setup and at least a few other Elves on the battlefield.

If you're playing Elf tribal and this isn't already in your deck, add it today.