Mob Mentality

Whenever this creature attacks, it gets +X/+0 until end of turn, where X is the number of attacking creatures you control.

Enchant creature

Whenever enchanted creature attacks, it gets +X/+0 until end of turn, where X is your devotion to red. (Each in the mana costs of permanents you control counts toward your devotion to red.)

Enchant creature you control

Tap enchanted creature: Target creature other than the creature tapped this way gets +2/+1 until end of turn. Activate only if enchanted creature is untapped.

Enchant creature

When this Aura enters, draw a card.

Enchanted creature has ": This creature gets +1/+0 until end of turn."

Enchant creature

Sacrifice an untapped creature: Enchanted creature gets +2/+0 until end of turn.

Sacrifice enchanted creature: Creatures you control get +2/+0 until end of turn.

Trample

Landfall — Whenever a land you control enters, this creature gets +1/+1 until end of turn.