Combos Utilizing Soul-Echo

skip turns using chonatog, soul echo never leaves play, you don't die from less than zero life.

Play Glacial Chasm, which reduces damage dealt to u to 0 and then play soul echo and put a counter on it. The counter can't be removed due to G. C. so u can't loose as a result of having 0 life.

keeping them in play is hard but makes you invincible, also works with transcendance

have the symbol out and have a lich or soul echo out, then make a trample creature unnecicarily large

Have Soul Echo in play, the play Minion and pay an insane amount of life and enchant it with Pariah. You can't lose the game unless Wrath of God is played.

soul echo keeps you alive on 0 life or less as you donate lich to an opponent, disenchant it and win...

using the channel, pay 1 quadrillion life to get the echo out with as many counters. be sure to keep some counterspells handy in case of disenchant.

have phyrexian colossus out along with soul echo or lich, put a timing enchantment on colossus, tim, pay 8 life, rinse, repeat