Tempt with Mayhem does exactly that by offering a copy of an instant or sorcery spell, but if they copy it, you get a copy too
It says whenever Darksteel Splicer or another nontoken Phyrexian enters the battlefield under your control, create X 3/3 colorless Phyrexian Golem artifact creature tokens, where X is the number of opponents you have
The No Ban List Modern event from SCG CON was a nice snapshot of what could have been, but even that picture was flush with Eldrazi
24 Spells Joraga Treespeaker Llanowar Elf Skullclamp Wall of Blossoms Sylvan Library Elvish Visionary Viridian Emissary Rofellos, Llanowar Emissary Eternal Witness Wood Elves Yavimaya Elder Viridian Shaman Dungrove Elder Birthing Pod Molten-Tail Masticore Garruk Wildspeaker Master of the Wild Hunt Genesis Primal Command Thragtusk Plow Under Primeval Titan Green Sun's Zenith Hurricane 17 Lands Treetop Village Dryad Arbour Tranquil Thicket 14 Forests Other cards I considered Beast Within Masked Admirers Solemn Simulacrum Thrun, The Last Troll Llanowar Mentor Chancellor of the Tangle Green Sun's Zenith is a decent card in this deck having decent synergy with the dorks included for Birth Pod as well as scaling well with your ramping
Consider these Lands: The Tabernacle is reserved, and from a later set with more printings, but was rare vs
