Reference: http://gatherer.wizards.com/Pages/Card/Discussion.aspx?multiverseid=135243
Swamp - 1 Mana
Dark Ritual - 3 Mana
Dark Ritual - 5 Mana
Dark Ritual - 7
Dark Ritual - 9
Black Lotus - 12
Yawgmoth's Bargain, bargain for 1 draw - 6
Lion's Eye Diamond, then bargain for 18 - 9
Mana Crypt - 11
Mana Vault - 13
Sol Ring - 14
5 Moxens - 19
Grim Monolith - 20
Doubling Cube - 30
Doubling Cube - 50
Doubling Cube - 90
Doubling Cube - 170
Voltaic Key - 330
Voltaic Key - 650
Voltaic Key - 1,290
Voltaic Key - 2,570
Ancestral Recall - 2,569
Hurkyl's Recall - 2,567
4x Doubling Cube - 40,922
4x Voltaic Key - 654,602
Hurkyl's Recall, replaying everything - 167,575,050
Prosperity for 31 (entire deck) - 167,575,018
Hurkyl's Recall - 85,798,404,106
Hurkyl's Recall - 1,372,774,465,546
Opalescence
Riku of Two Reflections
Mirror Gallery
3x Riku of Two Reflections, copying for each one, netting
15 Rikus in total
Precursor Golem
Xenograft naming Golem
4x Doubling Season, Riku into 64
4x Hive Mind, Riku into 64, Doubling Season for an
unimaginably large amount
Djinn Illuminatus
Rite of Replication, kicked, targeting everything, copied 15 times for Riku, many times for Hive Mind, getting an enormous amount of Rikus, and even more Hive Minds and Doubling Seasons
Rite of Replication, kicked, targeting everything, copied more than a billion to the billionth times for Riku, 2 billion to the billionth for Hive Mind and Doubling Season, getting a number with an absolute shitload of zeros after it for everything
Rite of Replication... copied for 1-with-a-sextillion-zeroes-after-it times, getting 1-with-a-sextillion-zeroes-after-it times six to the power of 1-with-a-sextillion-zeroes-after-it everything
Rite of Replication...... copied for 1-with-a-number-of-zeroes-after-it-equal-to-1-with-a-quintillion-zeroes-after-it times, but you Twincast this 4 times, which is replicated an infinite amount of times for each one, and everyone has to cast this an infinite amount of times also. But you're not done, you replicate it a million times with Djinn, and also Reverberate this 2 times copying it an infinite amount of times and everyone copies it blah blah blah...
Yawgmoth's Will, replaying EVERYTHING from Dark Ritual to Hurkyl's Recall to Rite of Replication, for infinity to the power of infinity to the power of infinity
To cap it all off, you play Orochi Hatchery, using half your mana, which is duplicated an infinite amount of times by Riku, for about a trillion counters each, but the counters are also duplicated an infinite amount of times to the power of infinity to the power of...
You tap infinite amount of Hatcheries for... a bitchin amount of Snakes which will be duplicated and whatnot...
Fires of Yavimaya
Might of the Masses targeting EVERYTHING.
Attack with infinite amounts of creatures and each have P/Ts of Holy/Shit.
