Beyond Zinnia, there are some impressive cards in the 99 like Jacked Rabbit and Rapid Augmenter that only further the madness that is your battlefield
However, you will become the monarch again if you hit your opponent and deal them combat damage
So, for example, you could Opt into a Terminus and wipe out all creatures on the board for a total of two mana during your opponents attack step
These triggered abilities have no source and are controlled by the player who was the monarch at the time the abilities triggered
Sadly, were not in the right colors for these abilities, but a good one I found is Mirri, Cat WarriorMirri, Cat Warrior
It seems to have invested more power in all-around powerful cards like Basris Acolyte, fragile threats like Dub, and card advantage in Valorous Steed than it has in its removal