When the opponent activates a Purrely Quick-Play Spell, Retaliating C effect could be activated in a Chain
While Bloodthirster can only attack once per turn there are all sorts of combat tricks to keep it attacking
These are creature types which have been receiving their own dedicated support cards and strong on-type creatures for decades, and are all but guaranteed to keep getting those upgrades for as long as Magic is releasing sets
Sylvan Bladefender EARTH 4 [ Plant / Effect ] When this card destroys an opponent's monster by battle and sends it to the Graveyard: You can excavate the top card of your Deck, and if it is a Plant-Type monster, send it to the Graveyard
The best Ninjas are always those with card advantage on their damage triggers, and while green is already overflowing with this sort of incidental card draw, Avenger could still sneak into some Standard lists
Then for each creature card you own in exile with a memory counter on it, create a tapped and attacking token thats a copy of it