With the power of your inkcaster, the image rises off the page
If you cast only one half of a split card, you only consider that half's mana value while it's on the stack
In this sense, Horn of Valhalla both acts as a way to develop your board and as a payoff once your board is developed, which is quite powerful
I also want to tell you another thing: Dont worry about trends or about what other people think
Rise of the Floodborn Card List: Sapphire Ink Sapphire also got a pretty massive buff this set, with cards like Pawpsicle and Haversham making their way into popular decks and providing much needed draw support, while legendary cards like Alice Growing Girl make waves due to sheer questing power
It's a green enchantment that costs two mana, and it creates a food token upon entering the battlefield