This happened to me too. I had 3 mana dorks, played a 6 spell in the Starter Duel event but did not get the achievement. 11/10/2025 around 3:30pm PT on Desktop

The same happened to me, too. Starter deck, blue-green, 3 mana and 3 mana mooks on the field, played a 6-mana enchantment.

I have the same problem

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Built a deck for standard play and got the achievement. Appears starter duel decks won't count with this one.

achieved twice with blue/green starter duel deck. no achievement :(

Same issue happened to me in the starter duel. 3 elves and 3 lands to cast Rampaging Baloths I was playing on my PC. Not exclusive to mobile devices.

Same Problem on my Galaxy s21. Drew my 3rd Land on Turn 4 had 3 mana dorcs in play. Played the Land and 6 Mana 6/6 Trample from the green/blue starter deck.

All instances of this were played on either an 5th gen. iPad Pro or Samsung Galaxy S20 5G, if that’s relevant to fixing the bug. I suspect the real issue is with the single-instance achievements, which all have this issue while the across-multiple-games achievements work fine.

Same as above one Llanowar Elf, Two on the 2-drop Mana elves, used to cast the 6-cost 4/4 vigilant mammoth with ETB effects.

Exact same thing with me. I literally held a land back so I could do the thing