3-mana Ajani is GREAT. Seriously, I think it's one of the most underrated Cube cards out there. If you have any remotely large creature - or a way to make a small creature into one - it can steal games you have no business winning, and curving into it with almost any 2-drop makes you a solid...
said thread: http://riptidelab.com/forum/threads/gbs.45/page-61#post-46627
^G1 of the RPTQ final and the whole PPTQ final are worth watching if I say so myself
Yeah, blink can quickly become obnoxious. Actual Blink is fine, and one-shot blinks tied to other effects are good, but it's a bit too easy to win by just moving Blade Splicer back and forth between zones.
I don't know how often 15 life or 10 life + guaranteed 2/2 will be better than Feudkiller's Verdict, which is a fun card but not one I'm looking to Cube above a low power level; the 'other' mode is 3 2/2s, which is fine but low impact compared to the other things white can do at 5 mana...