Behemoth Sledge
Artifact — Equipment
Equipped creature gets +2/+2 and has trample and lifelink.
Equip 
"May this grant you all the strength of the behemoths and none of their serenity." —Ajani
Dave Allsop
Rulings
Multiple instances of lifelink on the same creature are redundant. If a creature with multiple instances of lifelink deals damage, its controller still only gains life equal to the damage dealt.
(wotc • 2009-10-01)
Rulings
Multiple instances of lifelink on the same creature are redundant. If a creature with multiple instances of lifelink deals damage, its controller still only gains life equal to the damage dealt.
(wotc • 2009-10-01)