Splinter & Leo, Father & Son Splinter & Leo, Father & Son is squarely in group hug territory, though if you picked only one mode, it's still decent with flicker effects
Rise of the Floodborn doesnt just build on the first set of cards in terms of quantity, either
Bleeding your own forces a little on each players turn will very quickly add up to a lot of counters on your Incubators or on anything else, be that +1/+1 counters on your own creatures, -1/-1 counters on opposing ones, loyalty counters on your planeswalkers or even poison counters on your opponents
Stronger cards create a strategy
Its competitive utility, particularly with abilities like Guts, allows it to deal substantial damage when properly utilized, securing its place in the minds of players