T1 aka vintage = all the cards allowed, banned cards are allowed but one per deck only (Mox, black lotus....) T1.5 aka legacy = all the cards of T1 without the banned cards. T1.X aka extended = last four years of extension sets T2 aka standard = the two last extension sets Block=current extension set only
There are others formats but not so competitive.
As we are all former players i propose we play in legacy.
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