Agatha of the Vile Cauldron hou Ferocious — Frontier Mastodon enters

Ferocious — Frontier Mastodon enters with a +1/+1 counter on it if you control a creature with power 4 or greater

Put that card onto the battlefield and the rest on the bottom of your library in a random order

you may cast an instant or sorcery spell with mana value less than or equal to the number of Spirits you control from a graveyard without paying its mana cost

As long as it's your turn and you control an Army

put a +1/+1 counter on that creature

Agatha of the Vile Cauldron hou Ferocious — Frontier Mastodon entersActivated abilities of creatures you control cost {X} less to activate, where X is Agatha of the Vile Cauldron's power. This effect can't reduce the mana in that cost to less than one mana. {4}{R}{G}: Other creatures you control get +1 +1 and gain trample and haste until end of turn.