How competitive could this be?

It's been some time since I played Magic. Here's the last deck I played:

3 - Mother of Runes

2 - Elvish Piper

3 - Timberwatch Elf

4 - Skyshroud Elf

4 - Priest of Titania

1 - Reya Dawnbringer

2 - Platinum Angel

2 - Shivan Hellkite

1 - Mox Emerald

1 - Mox Pearl

1 - Mox Ruby

1 - Sol Ring

1 - Black Lotus

1 - Staff of Domination

1 - Memory Jar

2 - Mishra's Helix

1 - Disenchant

1 - Berserk

1 - Fork

2 - Urza's Rage

2 - Swords to Plowshares

1 - Hull Breach

1 - Regrowth

1 - Flame Wave

2 - Mirari's Wake

1 - Mountain

2 - Forest

1 - Strip Mine

1 - Rith's Grove

1 - Meteor Crater

1 - Glimmervoid

1 - Yavimaya Hollow

4 - Taiga

4 - Plateau

4 - Savannah

This deck has good speed with plenty 1 & 2 drop cards. Virtually infinite mana with land, elves, and the moxes. It can stall with Mishra's Helix & Platinum Angel. It has good protection with the Mothers & Yavimaya Hollows. Self pumps with Timberwatch & Mirari's Wake. Elvish Piper lets me put creatures on the board without being countered. Killer fatty fliers that protect me, kill opponents' creatures, and all but give me the win. Direct creature removal with Urza's Rage, Shivan Hellkite & Swords to Plow. Mass creature destruction with Flamewave. Card advantage with Memory Jar & Staff of Domination.

This deck was a lot of fun to play because it throws out so many things at my opponent. I'd like get back into Magic with my old circle of friends, but I know a couple of them have kept up their decks. Since I don't really know what's out there now, what should I worry about or look out for? How do you guys think this would do now, as is? And what updates or changes would you make? I want to keep as much of this as possible intact, but I am open to any and all suggestions.