This Japanese holographic Poliwrath from 1996 arrived in my mailbox slightly curled
You +1 it to attach to your critter and then it now cannot be attacked to be killed, it gets a +1/+1 counter and then when the attached dork smashes face, you put that many loyalty counters here
You can fairly reliably cast Gweena on turn two in other formats like Pioneer or Explorer, with one mana creatures like Llanowar Elves and Elvish Mystic to help ramp up to bigger cards like Craterhoof Behemoth
In the meantime, you can gain tempo advantage and start to hammer them down
Rampant Frogantua's second ability counts every player who has lost, no matter how the player lost the game: due to a state-based action (having 0 or less life, trying to draw a card from an empty library, having 10 or more poison counters), because of a spell or effect that states they lose the game, because your awesome might has left them with no choice other than concession, or for any other reason