One of my favorites is Magnus the RedMagnus the Red, a flying 4/5 with some fun abilities
On Thin Ice On Thin Ice looks like a fine payoff for building a snow deck, but this hyper-efficient Oblivion Ring variant is worth playing snow lands for, especially in decks that care about enchantments
You have to protect your lifegain as hard as you can, and be especially aware of explosive turns they can have
Ancient Greenwarden $9.50 Zendikar Rising s Ancient Greenwarden gets a reprint in J25
It does cost a fair bit of mana, but if you're playing a rad counter deck, you will be milling yourself so adding on a reanimator package can get it to the battlefield quicker
Tribal Flames A key finisher in Domain Zoo decks, Tribal Flames does 5 damage for 2 mana, which is an awesome rate, even if its only a sorcery