You may exile two green cards from your hand rather than pay this spell's mana cost. Allosaurus Rider's power and toughness are each equal to 1 plus the number of lands you control.

Descend 4 — This creature gets +3/+0 as long as there are four or more permanent cards in your graveyard.

Trample, haste

Trample If this creature would deal combat damage to a player, it deals double that damage to that player instead.

Reach, trample

Reach, trample Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)

At the beginning of your upkeep, if you control a creature with power 4 or greater, draw a card.

Look at the top five cards of your library. You may reveal a Dinosaur or land card from among them and put it into your hand. Put the rest on the bottom of your library in any order.

Vigilance, reach Whenever a Dinosaur you control deals combat damage to a player, draw a card.

{T}: Add one mana of any color in your commander's color identity.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.

Search your library for up to two basic land cards, reveal those cards, put one onto the battlefield tapped and the other into your hand, then shuffle.