A mana creature that scales once you have bigger creatures (and four power isnt all that big) to cast bigger creatures can probably get out of hand, especially if you have something to untap it
Vazi is halfway between a group hug and group slug deck, helping your opponents cast spells, but ideally, being built so you can punish your opponent at the same time
for its surge cost, this Bushwhacker comes with both
cant activate it without delaying drawing Warden till turn 5 (might as well Blackmail Kolaghans Command actually) My turn 3: Make Warden a warrior, attack with 3/3 (12 life) Opponent turn 4: Cast, and make Warden a 3/3, dont attack My turn 4: Make Warden a lifelinking spirit, dont attack Opponent turn 5: make Warden a lifelinking spirit, attack (15 life) My turn 5: Make an 8/8 Actually, wait, 15 life is less than 19 life
those are reserved for decks with blue mana sources, but that doesn't mean you're defenseless if you're considering changes
There are no new combos except the three Meld options, but there are plenty of new combo enablers that could really quicken things up for you, if you've already been looking for such opportunities