mtg red standard cards Mono Aggro by MTG-Max - MTGO League Legal in Standard, Colors: Red,

Frilled Mystic

If he's on the field, he'll keep your hand size unlimited, he could work in the 99 or as your Commander

For seven mana you get an on curve 7/7 with four powerful keywords - flying (evasion), vigilance (very strong in multiplayer swinging at people in the air for Commander Damage and then holding the fort), deathtouch (no one wants to block) lifelink (nice double life swing for that 7 damage.)

But the exhaust cards dont really help with that (other than Greenbelt Guardian), and so I think you can basically consider RG Aggro and Temur Exhaust to be distinct archetypes

After all, they're losing tons of creatures, making it easy for Thraximundar to bring back some minions under his control

Meanwhile, Rukh Egg was hilariously broken in 1993