You may pay and tap four untapped creatures you control with flying rather than pay this spell's mana cost.
Flying, lifelink
Other creatures you control with flying have indestructible. (Damage and effects that say "destroy" don't destroy them.)
Flying (This creature can't be blocked except by creatures with flying or reach.)
Vigilance (Attacking doesn't cause this creature to tap.)
Other creatures you control have vigilance.
This spell can't be countered.
Protection from blue (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything blue.)
: Shifting Ceratops gains your choice of reach, trample, or haste until end of turn.
Enchant creature
When Sleep Paralysis enters the battlefield, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
When Sorin's Guide enters the battlefield, you may search your library and/or graveyard for a card named Sorin, Vampire Lord, reveal it, and put it into your hand. If you search your library this way, shuffle it.
[+1]: Target creature you control gains deathtouch and lifelink until end of turn. If it's a Vampire, put a +1/+1 counter on it.
[+1]: You may sacrifice a Vampire. When you do, Sorin, Imperious Bloodlord deals 3 damage to any target and you gain 3 life.
[−3]: You may put a Vampire creature card from your hand onto the battlefield.
[+1]: Up to one target creature gets +2/+0 until end of turn.
[−2]: Sorin, Vampire Lord deals 4 damage to any target. You gain 4 life.
[−8]: Until end of turn, each Vampire you control gains ": Gain control of target creature."