@shogunboy Well I could see Garruk Wildspeaker as a good possibility for the deck, And even Narset Transcendent Very much might make the cut come dragons. But I enjoy this Gideon as a great commander card. Constantly I find myself adding 6-9 loyalty tokens when I do his +1, unless your meta is just pure control players Normal commander games really make this guy shine. usually able to Ultimate in 1-2 Turns, Just flicker out some guys then just Ultimate and GG everyone.

Nice looking Roon list, +1. Here are some ETB creatures that have worked well for me, perhaps they'll provide some food for thought for you: Angel of Finality, Angel of Serenity, Archaeomancer (I see this is in your maybeboard but you should definitely try it out), Deadwood Treefolk, Duplicant, Gilded Drake, Glen Elendra Archmage, Nevermaker, Reclamation Sage, Reveillark, & Venser, Shaper Savant.

Some other goodies that work wonders in an ETB/blink deck: Ghostly Flicker, Momentary Blink, Birthing Pod, Parallax Wave & of course Aura Shards (I know this has been suggested often but there's a reason for that haha).

Utility lands: Dryad Arbor, Halimar Depths, Minamo, School at Water's Edge & Reliquary Tower.

Lastly, some generic good stuff that will help your overall cause: Birds of Paradise, Consecrated Sphinx, Ephara, God of the Polis, Oracle of Mul Daya, Eladamri's Call, Mirari's Wake, Privileged Position, Green Sun's Zenith, Rite of Replication & Tooth and Nail.

Hopefully this helps and isn't a suggestion overload!

@Forkbeard- Thanks for looking!

• Angel of Finality is one ive been considering for awhile now and since I have a few reanimator decks resurfacing in my meta I'm pretty sure i'll work her in. Angel of Serenity and Archaeomancer are ones that I would like to work in also. need to get ahold on the angel and the archeomancer I just need to find a slot. Not a fan of Deadwood Treefolk, Duplicant is good but Again need to get ahold of one and find options for it, Gilded Drake is too expensive for my tastes, Glen Elendra Archmage is another that is expensive but I just need to find a trade for one,Reclamation Sage im considering swapping for the Acidic Slime for cost purposes, Reveillark is another I just need to get a hold of, Venser, Shaper Savant is good but a tad expensive I have wanted one for awhile now but haven't had the drive to drop it for him.

• Ghostly Flicker,and Momentary Blink are both good but I ended up dropping the blink at some point. might rework it back in. Birthing Pod and Parallax Wave I'm not big on.

• Dryad Arbor is a bit pricey for all it does. might work one in though. Minamo, School at Water's Edge is far too expensive, but it is good. And I do Have a Reliquary Tower in the deck I'm sure of I just need to figure out the typo on here why it wasn't included.

• My meta is far too flooded with board wipes to fully use any mana dorks Birds of Paradise included, Consecrated Sphinx is another one that is just hard to get a hold of and the price doesn't help either. I have been really considering Ephara, God of the Polis before you mentioned it but I think I want to try to work her in. the rest of the options are all great cards in their own right but most are a tad expensive but thank you for the suggestions!

Woodland Bellower!!! One of the best ETB effects in my opinion

Nice deck, would personally do a little bit more write-up

especially about combo's like resetting the persist counter of Woodfall Primus (a favorite combo of mine).

Hey. Pretty nice list. Some interesting choices there. I have been playing a Bant blink deck for a while now. Let me share some of my experiences and trade offs for you to consider:

• Archeomancer. I would replace this with Greenwarden of Murasa, as that gives you more flexibility.
• Armada Wurm. I ended up cutting this and other token makers from my list, because they don't offer direct board control. I ended up rarely blinking or even playing Armada Wurm when I drew it, because other options would simply be better to control the board.
• Crystallization seems a bit out of place, as it does not really synergize with the deck. Also if you want to play that type of removal, I would say there are better options out there, like Song of the Dryads.
• I did not like playing cards like Flickerwisp, because in the end, it's just a one-shot effect (you need another blink effect to reuse it. Might as well play another, stronger blink effect instead).
• You're not playing any creature tutor cards, while a Roon and all his creature friends are well compatible with a toolbox approach.

Some cards I find amazing in a blink deck that I did not see in your list:

• Gilded Drake should be in this deck if you can afford/find it. Same for Aura Shards.
• In a similar style, Perplexing Chimera can be really nice.
• Duplicant is great: repeatable coleress creature removal.
• Glen Elendra Archmage and Spellskite also work well with blinking effects.
• If you should decide adding creature tutors, Ixidron and Wickerbough Elder are must plays imo, primarily because they deal with Torpor Orb and Hushwing Gryff. Ixidron is also great with something like Ghostway, as your creatures return face-up.

Hope some of these tips are of help to you and fit your view of what you want the deck to be.

GL!

New Thassa and Soulherder might be good additions.