Explore the Dark Temple

As an additional cost to cast Explore the Dark Temple, sacrifice two elves and tap an untapped forest you control.
Create 5 tokens named Blood Elf with base power and toughness 4/4 with Thirst for Blood 2 (When this creature enters the battlefield, you may put two +1/+1 counters on target elf you control. If you don't, draw a card and lose 2 life.).