Heroless uses a bit more than just 10 but with heroless you'd most likely bump your deck size up for more defense/offense anyways.
As the small offense guy here, I'll post a few for your viewing pleasure and enjoyment.
Now assume you don't include doms as offense.
Wall of Protection
Judge's seat
Storehouse
Gold Covenant Cards: 2
I am Healing
I am Redemption
Gold Heroes: 3
Deborah
Ehud
The Generous Widow
Gold Hero Enhancements: 1
Samson's Sacrifice
I also have cof in case something goes horribly wrong. Anyways the idea of THIS one is to use either evil for killers to snipe off their protection fort then shoot all their ecs dead with Judge's seat OR use Ehud to choose an immune character. Play SS to wipe their territory, heal ehud (since the ec is immune they get no chance to negate). Then snipe the immune ec with JS. This offense has won me many a tournament.
WOP
Storehouse
Obediah's caves
ST
Holy grail
Lampstand
Gold Covenant Cards: 2
I am Healing
I am Redemption
Multi-Color Hero Enhancements: 3
Jordan Interrupted (Teal)
Trumpet Blast (Teal)
Zeal for the Lord (Teal)
Silver Hero Enhancements: 1
Protection of Angels
Green Hero Enhancements: 1
Backward Shadow
Purple Hero Enhancements: 2
Authority of Christ
Reach of Desperation
and saul/paul on defense.
Now this is a bit bigger than the other offense. Pretty much convert Saul Paul over to Paul. Ra use an itb/trumpet blast to win the first battle (killing their protect fort). use backwards shadow when they CM you. Then next use ITB + AOCP to terr wipe them.
Another fun one is End game use Hidden Tresures, a green prophet and sowing the seed. Place it on an ec, then die. Next turn flip up crown of thorns to speed it up and watch their whole territory get converted. (Note: Kill the protect fort before you do this)
