Spells that when they Resolve Sac a Land for Any Lands There are four of these, one four-cost sorcery that broke Standard with Valakut, and then sacs any number for any lands out tapped
Graded Population Report: Lulu, Stern Guardian [Borderless Foil] #467 Visualize the distrbution of grades in the chart
Absolute Virtue is pretty simple to play against
Nature Shields Its Own Rarity: Common TYPE: Ongoing Scheme SUBTYPE: - CMC: 0 Mana cost: USD: $3.47 EUR: 0.47 TIX: 0.00 EDHREC RANK: - (An ongoing scheme remains face up until it's abandoned.) Whenever a creature attacks and isn't blocked, if you're the defending player, create a 0/1 green Plant creature token that's blocking that creature
Mikus Spark (a renamed Chandras Ignition), Harmonize
Theres nothing about the normal Commander rules which prevents you playing 1v1, of course