Twin-Headed Wolf (Twin-Headed Cerberus in Japanese) isn't the most novel concept
Why Sunspine Lynx Probably Doesn't Stink: It might
A four mana, six loyalty walker in green is no easy thing to take down
Chaotic Goo Chaotic Goo alone is only okay, but it works much better in decks built around +1/+1 counters
They are functionally near-identical with one critical difference: Soul Warden: Whenever another creature enters the battlefield, you gain 1 life . mandatory Souls Attendant: Whenever another creature enters the battlefield, you may gain 1 life. optional Why it matters: Against cards like Transcendence (you lose if you have 20 or more life) or in life-total-sensitive scenarios, Souls Attendant lets you choose not to gain life
If youre a mono-white deck and not running too many colorless utility lands, this will be better than Loyal Warhound, thanks to the flexibility to grab utility Plains