Rofellos, Llanowar Emissary - Urza's Destiny (UDS){T}: Add {G} for each Forest you control.

" —Bogardan mage

" explained Urza

Spend only red mana on X

Remove all +1/+1 counters from Molten Hydra: It deals damage to any target equal to the number of +1/+1 counters removed this way

return Shifty Doppelganger to the battlefield

Repeat this process until both players' coins come up heads on the same flip

Eternity Vessel enters the battlefield with X charge counters on it

If it's a creature card that shares a creature type with a creature you control

it's survival of the richest

Rather than pay the mana cost for a spell

then discards two cards

At the beginning of your precombat main phase