You can Tribute 1 face-up Level 5 or higher Normal Summoned/Set monster, then target 1 face-up card on the field; negate its effects, then draw 1 card. (The effects remain negated until the end of this turn.) During your Main Phase, if this card is in your Graveyard: You can banish this card, then declare 1 Attribute; all face-up monsters currently on the field become that Attribute until the end of this turn.
Dragon Knight of Creation is a level 4 monster that you can easily normal summon/set, and it can increase its level by 4 during your opponent's turn. Since Strike of the Monarchs is a quick-play spell, you can use it during your opponent's turn to tribute your monster to negate a card.
You draw cards / Activates from your Graveyard
Banishes itself from Graveyard for cost
Negates the effects of Effect Monsters / Negates the effects of Spell Cards / Negates the effects of Trap Cards