Looking at Hiram Flaversham Toymaker and the Pawpsicle/Fortisphere combination, it allows that same card draw advantage in a color not designed for the mechanic, The real problem here though, is that your opponent usually has no answer to the 6 Willpower Hiram this early in the game, or no way to remove items that early before the Hiram combo is pulled off and your opponent has a three card advantage against you by turn four
If youre using this ability on your turn, youll create more creatures to sacrifice to the ability, making this card somewhat self-sustaining
Roaming Throne's last ability doesn't copy the triggered ability
Nezahal, Primal Tide Then theres Nezahal, Primal Tide, which is a pain to remove and a card draw monster against the right decks
A hasty 7/7 trampling pig isnt the end of the world on an empty board, either
Also lacking is the mana base, which is slow as molasses with a lot of tap lands and cheaper options to cover the five colors needed