Decklists and impressions from Pioneer decks 5-0 in MTGO

Yesterday we had some 5-0 Pioneer decklists released by Wizards of the Coast. Sunday, all the decklists can be found here, in the Competitive Constructed League Section. What did we see?

TOP 50 most played cards (without couting basic lands)

1. Thoughtseize - 148 copies

2. Fatal push - 124 copies

3. Hallowed Fountain - 121 copies

4. Veil of Summer - 102 copies

5. Wild Slash - 94 copies

6. Glacial Fortress - 88 copies

7. Teferi, Time Raveler - 88 copies

8. Once Upon a Time - 84 copies

9. Smuggler's Copter - 84 copies

10. Opt - 79 copies

11. Breeding Pool - 79 copies

12. Overgrown Tomb - 79 copies

13. Fabled Passage - 78 copies

14. Botanical Sanctum - 76 copies

15. Llanowar Elves - 74 copies

16. Blooming Marsh - 73 copies

17. Stomping Ground - 72 copies

18. Monastery Swiftspear - 68 copies

19. Mystical Dispute - 67 copies

20. Temple Garden - 66 copies

21. Elvish Mystic - 65 copies

22. Rest in Peace - 65 copies

23. Oko, Thief of Crowns - 62 copies

24. Supreme Verdict - 62 copies

25. Steam Vents - 61 copies

26. Pithing Needle - 60 copies

27. Watery Grave - 59 copies

28. Bomat Courier - 57 copies

29. Gilded Goose - 54 copies

30. Eidolon of the Great Revel - 51 copies

31. Spirebluff Canal - 51 copies

32. Oath of Nissa - 50 copies

33. Soul-Scar Mage - 50 copies

34. Searing Blood - 49 copies

35. Scavenging Ooze - 48 copies

36. Spell Queller - 47 copies

37. Dovin's Veto - 47 copies

38. Dig Through Time - 46 copies

39. Sacred Foundry - 45 copies

40. Jace, Vryn's Prodigy // Jace, Telepath Unbound - 44 copies

41. Mana Confluence - 44 copies

42. Burning-Tree Emissary - 44 copies

43. Fry - 43 copies

44. Narset, Parter of Veils - 42 copies

45. Abrupt Decay - 41 copies

46. Tireless Tracker - 41 copies

47. Drowned Catacomb - 40 copies

48. Collected Company - 40 copies

49. Inspiring Vantage - 39 copies

50. Spell Pierce - 39 copies

I hope this list of cards helps you understand the staples of the format.

ADAPTED MODERN DECKS

We saw some Modern decks adapted to the format pool of cards.

HUMANS

AFFINITY

TOKENS

BOGLES

COMBO DECKS

Most of combo decks in this format are about Saheeli Cat. But we saw one particular one that made 5-0:

The combo consists of playing Jeskai Ascendancy on 3. And on 4 playing Sylvan Awakening, which will turn your lands into creatures. From now on you only have to cast spells to untap your lands to generate more mana while gaining +1/+1. The combo is fast, interesting and has consistency, the problem that needs the enchantment that cost 3 in play and spells that aren't instants, so it loses to Abrupt Decay.