Combined with the frankly outrageous state of things back then (4 Ancestral Recall , anyone?) leading to prolonged game states and impasses, WotC decided that enough was enough and restricted Ivory Tower
Commander Qty: 1 Price: 0.15 Eshki Dragonclaw Vigilance, trample, ward At the beginning of combat on your turn, if you've cast both a creature spell and a noncreature spell this turn, draw a card and put two +1/+1 counters on Eshki Dragonclaw
The fact that it always shows up in the Top 8s of various formats over the years speaks for itself
This shows that the designers are aware of what's been done before and are experimenting with mechanical identity
You can expect the cube to feel very different each week
: Level 2 Whenever an artifact an opponent controls is put into a graveyard from the battlefield, draw a card