Your opponent will need to sacrifice a creature and pay 2 life to the Rippers trigger to get past ward, a pretty steep price, Id say
Each of those lands is an 8/8 green Elemental creature for as long as it has an awakening counter on it
In Innistrad: Crimson Vow last year, we got a card called Bleed Dry, which is a random, forgotten uncommon that is the same as the front side of Invasion of Innistrad but with the upside of exiling the creature that it kills, and cards like Tragic Slip and Tragic Fall do the same thing for one or two mana if their morbid or hellbent conditions are met
a1-93-frosmoth is another option, but you'll have to add Water Energy to your Fire deck, which could make things awkward
If you do, it gains Whenever a land enters the battlefield under your control, if Cosima is exiled, you may put a voyage counter on it
There may be a situation where youre opening a Charizard pack, but the card youre looking for is in the Mewtwo pack