Coercive Impetus
Goad has always been a political tool that pays you nothing directly: you point someone else's creature at someone else's face and hope the resulting bloodshed lands in your favor. This Aura fixes the freeloader problem by attaching a reward to the attack itself. The +1/+1 makes the goaded creature slightly better at the swinging it is now compelled to do, and every attack it makes (which is every combat it can attack, at another player) refunds you a card off the top for a single point of life. The trick is that goad forces the creature at anyone but you when it can, so the card it draws is bought with a mandatory attack that rarely comes back your way. That turns a diplomatic nudge into a repeatable draw engine bolted to another player's board: you are not just steering their threat, you are taxing its every swing for value while they eat the combat damage. The life loss is the only counterweight, and it is a small, steady drip rather than a real gate, which is what lets the enchantment hum turn after turn as long as the enchanted creature stays alive to keep attacking. It is a design that rewards putting your Aura on the biggest, most attack-hungry creature on the table and letting the resulting arms race fund your hand.

