And so the need to tweak that "perfect timing" with the usual control toolset, plus a healthy prediction of what card will hurt your battles the most for a particular matchup

Advanced Search Sets Random Syntax Atzal, Cave of Eternity Bayou Blooming Marsh Crystal Quarry Darigaaz's Caldera Darkmoss Bridge Deathcap Glade Deceptive Landscape Festering Gulch Festering Thicket Foggy Bottom Swamp Foreboding Landscape Foul Orchard Gilt-Leaf Palace Gohn, Town of Ruin Golgari Guildgate Golgari Rot Farm Grim Backwoods Haunted Mire Hissing Quagmire Illegitimate Business Indatha Triome Jungle Hollow Koskun Keep Llanowar Wastes Lounge Murmuring Bosk Necroblossom Snarl Nurturing Peatland Old-Growth Grove Opulent Palace Overgrown Tomb Pine Barrens Restless Cottage Sandsteppe Citadel Savage Lands Skemfar Elderhall Strangled Cemetery Subterranean Cavern Svogthos, the Restless Tomb Tainted Wood Temple of Malady The World Tree Titan's Grave Turbulent Fen Twilight Mire Twisted Landscape Underground Mortuary Undergrowth Stadium Vernal Fen Viridescent Bog Wastewood Verge Witherbloom Campus Woodland Cemetery Woodland Chasm Zagoth Triome Ziatora's Proving Ground

If your commander would be put into your library, hand, graveyard or exile from anywhere, you may return it to your command zone instead
Then, if you spend four colorless mana and tap the card, you can "proliferate, then proliferate again." Play your cards right, and you've automatically dealt one player a heap of mean counters