We've seen the return of the Pro Tour, a Magic card sell for over 2 million dollars, big changes to many formats (as well as a few new formats), a new card type, many set releases, and more
Whenever Strefan attacks, you may sacrifice two Blood tokens
Of course, you need your own creatures in play to fight something, but that wont be difficult for a green deck to achieve
It sounds more complicated than I mean it to be: You know the concept from Final Fantasy and Shin Megami Tensei : Fire does a little fire damage, Fira a little more
The problem with the original card (I believe it was later changed) was that having two in play was essentially auto-win
Because Dryad only finds basic Forest, it will be most at home in a Green-heavy deck, which is a nice way to protect against giving 3+ color decks access to even more ramp