This effect is simply not one the Arena developers want in the format, with the Flare cycle from Modern Horizons 3 and the envoke Elementals from Modern Horizons 2 all being pre-banned in the format
Fused Polymer Construction Drop-tested and battle-ready
Whenever another Creature enters the battlefield, its controller may draw a card if that Creature's power is greater than each other Creature's power
This can help you sustain your hand somewhat, but this deck suffers greatly in top deck mode
Threats are the most important part of Modern, and answers arent as ubiquitous as they are in other formats
That's okay, I said to myself when I came in this morning, I'll just have to ask Brian (Brian Tinsman that is, Saviors lead designer) about it