For restore Magicka, I usually go with flax seeds (found all over, and many houses have the flowers which yield flax seeds) bog beacon, and stinkhorn cap (found in Blackwood), both are fairly abundant in Cyrodiil and can make strong potions. Blackberries too will work, buy them at inns/taverns/grocers. The Shivering Isles also has many ingredients for this purpose like blister pod caps, Elytra ...