UGW Ally mill/lifegain

i tinkered a long while with the u b and u g mill combo. i found u g the fastest and most effective of the two formats, of course, due to harabaz druid, which allows us to kick a rite of replication turn 4. but, as magic players, we all know we dont always get the perfect hand. i repeatedly found my life total getting widdled away to nothing before i had milled my opponents of their library. my solution to this problem was ondu cleric. i never thought that running u g w would be so effective. but, thus far, it has proven its worth. how it works: i use halimar for mill, harabaz for mana, ondu for life, loremaster for card draw, and jwari to copy any one of these. by turn 4 i can usually, almost always play rite, lorthos or iona, which really stalls my opponent and gives me time to mill them or just gain a massive amount of life that most aggro decks cant keep up with. silence and negate also help further my control, while vines of vastwood protect critical allies. i think 2 time warp would be a nice addition but i dont have any of those quite yet. id appreciate comments and feedback on how to make this better, also any suggestions. thanks!