mtg hydra cards Voracious - Single Card double the number of +1/+1 counters on this creature. Mossborn Hydra · Foundations (FDN)

It doesnt get much more efficient than this two-mana Monk who gives us a free creature whenever we cast any noncreature spell

It was explained by Ryan Miller that these changes make it easier for different language cards

If youre willing to play double green, you could do something like: Creatures (15) Planeswalkers (2) Lands (26) Spells (17) 4 Thoughtseize 2 Abrupt Decay 4 Underworld Connections 4 Hero's Downfall 2 Bile Blight 1 Silence the Believers Sideboard The big reason to play Courser of Kruphix (beyond it just being a fantastic card) is how incredible it is in conjunction with Underworld Connections

The Earth Crystal and [[The Darkness Crystal]] are the standouts

Huatli, Warrior Poet Ah yes, Huatli, Take One