Whenever another creature enters the battlefield, its controller may draw a card if its power is greater than each other creature's power. {G}, {T}: Add X mana in any combination of colors, where X is the greatest power among creatures you control.

Evolve (Whenever a creature enters the battlefield under your control, if that creature has greater power or toughness than this creature, put a +1/+1 counter on this creature.)

Reach {3}{G}{G}{G}: Monstrosity 3. (If this creature isn't monstrous, put three +1/+1 counters on it and it becomes monstrous.) When Arbor Colossus becomes monstrous, destroy target creature with flying an opponent controls.

Each creature you control with power 4 or greater can't be blocked by more than one creature.

At the beginning of your end step, if you control a creature with power 5 or greater, you may draw a card. {T}: Add {C}.

Whenever another creature with power 3 or greater enters the battlefield under your control, you may draw a card.

When you cast this spell, reveal the top X cards of your library. You may put a nonland permanent card with mana value X or less from among them onto the battlefield. Then shuffle the rest into your library. Genesis Hydra enters the battlefield with X +1/+1 counters on it.

{T}: Add one mana of any color. If you control a creature with power 4 or greater, add two mana of any one color instead.

All creatures able to block Nessian Boar do so. Whenever Nessian Boar becomes blocked by a creature, that creature's controller draws a card.

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

Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Cycling {2} ({2}, Discard this card: Draw a card.)