Not only does it have the strongest 3 words in magic, draw a card , it is also important that it can be triggered from anywhere, not just from the battlefield
The fact he only lets them sacrifice nontoken/nonlands is important, and it makes the ability significantly stronger
These cards combine into the potential for infinite combats provided you dont whiff of Winota, with the caveat that only creatures with Haste will be able to attack once they untap
This card is a powerhouse by itself
All raw playtest cards come with a certificate of authenticity, a sample of which is shown here
(Note that there also is a mechanic called graft used by the Simic in the original Ravnica block, but I'm not talking about that.) Here's an example of a famous old card from Urza's Saga that grafts: The point of grafting is that you take an existing card and expand what it can do by grafting on additional words and/or abilities