That said, Reyas just a 4/6 with no relevant abilities besides flying, it costs 9 mana in mono-white, and you need to reach your next upkeep just to get the ability
Three cards stolen a turn is a fantastic rate that helps make up for Arvinox's exorbitant mana value
Anything that makes Treasure when it attacks is worth looking at for an aggressive deck, and the card draw gives your opponents a reason to keep taking a measly 4 damage
For example, if it's a creature, +1/+1 counters on it will still affect it
There is no common card that needed to be "played around" more than Ray of Command in Magic limited history, and the stories of getting 3-for-ones, 4-for-ones, or even 5- or 6-for-ones with Ray of Command were not unheard of
It becomes 3 damage if you control 3+ Snow permanents