Stelle and Caelus

Trample
Whenever Stelle and Caelus deals combat damage
to an opponent, put a Shield counter on up to one
target creature you control
At the beginning of your first postcombat main
phase, if you control four or more creatures with
Shield counters on them, untap all creatures that
attacked this turn. After this main phase, there
is another combat phase, followed by another
main phase.