The delayed triggered ability that makes you sacrifice the creatures will trigger only once
You have a 60.1% chance of having or finding one SPECIFIC creature/land that is a 4-of in your deck with a turn 0 Once Upon a Time (Starting 7 cards with 5 effective "draws" off OUAT in a 60 card deck) The draw filtering advantage is ~20% on turn 0, in every third game
Sword & Shield 6 cards for sale in bulk Normal Kira Rare Evolution
It was the case that PSA 10 graded copies of this card were selling for around $450 , but the average selling price for this card in general, even ungraded, is now sitting at an impressive $400
The cards current Market Price at time of writing ($5.81) shows how eager players are to explore the mechanics in Lorwyn Eclipsed
Not only does he give you an extra shot at a good roll each time, which greatly helps the consistency of such strategies, but he also grows in size each time you do roll, serving as a support card and a payoff all in one