Please take that into consideration when reading it
The fact that split cards change whether its in your hand, graveyard, or on the stack is important because of how rules consider each spell
And while I love Glass Cannon decks, especially Storm -- Zada, Hedron Grinder is an all-time favorite of mine -- they often are relegated to the "last game of the night / let's get a fast one in" because they either pop off and win quick or they do absolutely nothing
Snakeskin Veil - All right, its no Heroic Intervention
Beyond this, the 0 and plus abilities are solid
Even better, if you follow Nissa up by actually playing that Forest, and have seven or more lands, you can immediately flip her to her planeswalker half, allowing you to grab another land, draw a card, or make a 4/4